Download Simplicity 1600201 Specifications

TECHNICAL MANUAL
888-2500-001
DAX-1/DAX-3
AM Transmitter
DAX-1/DAX-3
AM Transmitter
Harris Broadcast
T.M. No. 888-2500-001
© Copyright Harris Broadcast 2003, 2004, 2005, 2007,
2012, 2013
All rights reserved
02May2013
Rev.D
Manual Revision History
DAX-1/DAX-3 AM Transmitter Technical Manual
REV.
DATE
Preliminary
18dec2003
Created
0
31mar2004
Review Copy to Service, Engineering, & Safety
A
12apr2004
Release Rev. A
B
03jan2005
Update all chapters
B1
26apr2007
Updated Parts List
C
15nov2012
62247
Updated Title Page, MRH-1 and Parts List
D
24apr2013
62703
Updated Title Page, MRH-1 and Table 6-1
5/2/2013
ECN
Pages Affected
888-2500-001
MRH-1
WARNING: Disconnect primary power prior to servicing.
Returns And Exchanges
Damaged or undamaged equipment should not be returned unless written approval and a
return authorization is received from Harris Broadcast. Special shipping instructions and
coding will be provided to assure proper handling. Complete details regarding
circumstances and reasons for return are to be included in the request for return. Custom
equipment or special order equipment is not returnable. In those instances where return or
exchange of equipment is at the request of the customer, or convenience of the customer, a
restocking fee will be charged. All returns will be sent freight prepaid and properly
insured by the customer. When communicating with Harris Broadcast, specify the order
number or invoice number.
Unpacking
Carefully unpack the equipment and preform a visual inspection to determine that no
apparent damage was incurred during shipment. Retain the shipping materials until it has
been determined that all received equipment is not damaged. Locate and retain all packing
check lists. Use the packing check list to help locate and identify any components or
assemblies which are removed for shipping and must be reinstalled. Also remove any
shipping supports, straps, and packing materials prior to initial turn on.
Technical Assistance
Technical and troubleshooting assistance is available from field service during normal
business hours (8:00 AM - 5:00 PM Central Time). Emergency service is available 24
hours a day. Telephone 217/222-8200 to contact the field service department or address
correspondence to Field Service Department, Harris Broadcast, P.O. Box 4290, Quincy,
Illinois 62305-4290, USA. Technical support by e-mail: [email protected]. The Harris
Broadcast factory may also be contacted through a FAX facility (217/221-7096).
Replaceable Parts Service
Replacement parts are available 24 hours a day, seven days a week from the service parts
department. Telephone 217/222-8200 to contact the service parts department or address
correspondence to Service Parts Department, Harris Broadcast, P.O. Box 4290, Quincy,
Illinois 62305-4290, USA. The factory may also be contacted through a FAX facility (217/
221-7096).
NOTE:
The # symbol used in the parts list means "used with" (e.g. #C001 = used with C001).
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v
Item
______________________________
Quantity
Part Number
________________________________
______________________________
Ref Des
e.g. C21,
R100, etc.
Item Used On Assembly if Known e.g.
C21 used on 992-8025-001
& Schematic 839-8038-991
Comments
Guide for Ordering Parts: Please provide as much information as possible to facilitate part
substitution as required. Equipment name, part number and serial number is found on a metal
ID plate on the rear of the unit. Describe the unit using the parts list if possible. Include
schematic information, schematic number, or number of next higher assembly. The next higher
assembly usually has a part number that begins with a 9xx-xxxx-xxx.
Shipping Method : ________________________
Preferred
FAX:
Telephone: ______________________________
________________________________
________________________________
________________________________
Address: ________________________________
Description of Part Part’s Name, Description, and
Specification from Parts List
Equipment Serial Number:___________________
Equipment Part Number:____________________
Frequency & Channel: ______________________
Payment Method : ________________________
Preferred
FAX:
Telephone: ______________________________
________________________________
________________________________
________________________________
Address: ________________________________
Shipping Information
Phone: 217-222-8200
FAX: 217-221-7096
Ship To (If different from billing information):
PARTS ORDER FORM
Billing Information
Customer Name: ________________________
Harris Broadcast
PO Box 4290
3200 Wismann Lane 62305
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WARNING: Disconnect primary power prior to servicing.
Guide to Using Parts List Information
The Replaceable Parts List Index portrays a tree structure with the major items being leftmost in the index. The
example below shows the Transmitter as the highest item in the tree structure. If you were to look at the bill of
materials table for the Transmitter you would find the Control Cabinet, the PA Cabinet, and the Output Cabinet.
In the Replaceable Parts List Index the Control Cabinet, PA Cabinet, and Output Cabinet show up one
indentation level below the Transmitter and implies that they are used in the Transmitter. The Controller Board is
indented one level below the Control Cabinet so it will show up in the bill of material for the Control Cabinet.
The tree structure of this same index is shown to the right of the table and shows indentation level versus tree
structure level.
Example of Replaceable Parts List Index and equivalent tree structure:
Replaceable Parts List Index
Part Number Page
Table 7-1. Transmitter
Table 7-2. Control Cabinet
Table 7-3. Controller Board
Table 7-4. PA Cabinet
Table 7-5. PA Amplifier
Table 7-6.
PA Amplifier Board
Table 7-7. Output Cabinet
994 9283 001 7-2
992 9244 002 7-3
992 8344 002 7-6
992 9400 002 7-7
994 7894 002 7-9
992 7904 002 7-10
992 9450 001 7-12
Transmitter
994 9283 001
Control Cabinet
992 9244 002
PA Cabinet
992 9400 002
Controller Board
992 8344 002
PA Amplifier
992 7894 002
Output Cabinet
992 9450 001
PA Amplifier Board
992 7904 002
The part number of the item is shown to the right of the description as is the page in the manual where the bill for
that part number starts. Inside the actual tables, four main headings are used:
•
•
•
•
•
Table #-#. ITEM NAME - PART NUMBER - this line gives the information that corresponds to the
Replaceable Parts List Index entry;
P/N column gives the ten DIGIT part number (usually in ascending order);
DESCRIPTION column gives a 25 character or less description of the part number;
REF. SYMBOLS/EXPLANATIONS column 1) gives the reference designators for the item (i.e., C001,
R102, etc.) that corresponds to the number found in the schematics (C001 in a bill of material is equivalent to C1 on the schematic) or 2) gives added information or further explanation (i.e., “Used for 208V
operation only,” or “Used for HT 10LS only,” etc.).
Inside the individual tables some standard conventions are used:
•
•
•
A # symbol in front of a component such as #C001 under the REF. SYMBOLS/EXPLANATIONS column means that this item is used on or with C001 and is not the actual part number for C001.
In the ten digit part numbers, if the last three numbers are 000, the item is a part that has been purchased
and not manufactured or modified. If the last three numbers are other than 000, the item is either manufactured or is purchased from a vendor and modified for use in the product.
The first three digits of the ten DIGIT part number tell which family the part number belongs to - for
example, all electrolytic (can) capacitors will be in the same family (524 xxxx 000). If an electrolytic
(can) capacitor is found to have a 9xx xxxx xxx part number (a number outside of the normal family of
numbers), it has probably been modified in some manner at the factory and will therefore show up farther down into the individual parts list (because each table is normally sorted in ascending order). Most
Harris Broadcast made or modified assemblies will have 9xx xxxx xxx numbers associated with them.
The term “SEE HIGHER LEVEL BILL” in the description column implies that the reference designated part
number will show up in a bill that is higher in the tree structure. This is often the case for components
that may be frequency determinant or voltage determinant and are called out in a higher level bill
structure that is more customer dependent than the bill at a lower level.
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!
WARNING:
THE CURRENTS AND VOLTAGES IN THIS EQUIPMENT ARE DANGEROUS. PERSONNEL MUST AT ALL TIMES OBSERVE SAFETY WARNINGS, INSTRUCTIONS AND REGULATIONS.
This manual is intended as a general guide for trained and qualified personnel who are aware of the
dangers inherent in handling potentially hazardous electrical/electronic circuits. It is not intended to
contain a complete statement of all safety precautions which should be observed by personnel in
using this or other electronic equipment.
The installation, operation, maintenance and service of this equipment involves risks both to
personnel and equipment, and must be performed only by qualified personnel exercising due care.
Harris Broadcast shall not be responsible for injury or damage resulting from improper procedures
or from the use of improperly trained or inexperienced personnel performing such tasks. During
installation and operation of this equipment, local building codes and fire protection standards must
be observed.
The following National Fire Protection Association (NFPA) standards are recommended as reference:
- Automatic Fire Detectors, No. 72E
- Installation, Maintenance, and Use of Portable Fire Extinguishers, No. 10
- Halogenated Fire Extinguishing Agent Systems, No. 12A
!
WARNING:
ALWAYS DISCONNECT POWER BEFORE OPENING COVERS, DOORS, ENCLOSURES, GATES, PANELS OR SHIELDS. ALWAYS USE GROUNDING STICKS AND
SHORT OUT HIGH VOLTAGE POINTS BEFORE SERVICING. NEVER MAKE INTERNAL
ADJUSTMENTS, PERFORM MAINTENANCE OR SERVICE WHEN ALONE OR WHEN
FATIGUED.
Do not remove, short-circuit or tamper with interlock switches on access covers, doors, enclosures,
gates, panels or shields. Keep away from live circuits, know your equipment and don’t take chances.
!
WARNING:
IN CASE OF EMERGENCY ENSURE THAT POWER HAS BEEN DISCONNECTED.
!
WARNING:
IF OIL FILLED OR ELECTROLYTIC CAPACITORS ARE UTILIZED IN YOUR EQUIPMENT, AND IF A LEAK OR BULGE IS APPARENT ON THE CAPACITOR CASE WHEN
THE UNIT IS OPENED FOR SERVICE OR MAINTENANCE, ALLOW THE UNIT TO
COOL DOWN BEFORE ATTEMPTING TO REMOVE THE DEFECTIVE CAPACITOR. DO
NOT ATTEMPT TO SERVICE A DEFECTIVE CAPACITOR WHILE IT IS HOT DUE TO
THE POSSIBILITY OF A CASE RUPTURE AND SUBSEQUENT INJURY.
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FIRST-AID
Personnel engaged in the installation, operation, maintenance or servicing of this equipment
are urged to become familiar with first-aid theory and practices. The following information is
not intended to be complete first-aid procedures, it is a brief and is only to be used as a
reference. It is the duty of all personnel using the equipment to be prepared to give adequate
Emergency First Aid and there by prevent avoidable loss of life.
Treatment of Electrical Burns
1. Extensive burned and broken skin
a. Cover area with clean sheet or cloth. (Cleanest available cloth
article.)
b. Do not break blisters, remove tissue, remove adhered particles of
clothing, or apply any salve or ointment.
c. Treat victim for shock as required.
d. Arrange transportation to a hospital as quickly as possible.
e. If arms or legs are affected keep them elevated.
NOTE:
If medical help will not be available within an hour and the victim is conscious and
not vomiting, give him a weak solution of salt and soda: 1 level teaspoonful of salt
and 1/2 level teaspoonful of baking soda to each quart of water (neither hot or
cold). Allow victim to sip slowly about 4 ounces (a half of glass) over a period of
15 minutes. Discontinue fluid if vomiting occurs. (Do not give alcohol.)
2. Less severe burns - (1st & 2nd degree)
a. Apply cool (not ice cold) compresses using the cleanest available
cloth article.
b. Do not break blisters, remove tissue, remove adhered particles of
clothing, or apply salve or ointment.
c. Apply clean dry dressing if necessary.
d. Treat victim for shock as required.
e. Arrange transportation to a hospital as quickly as possible.
f. If arms or legs are affected keep them elevated.
REFERENCE:
ILLINOIS HEART ASSOCIATION
AMERICAN RED CROSS STANDARD FIRST AID AND PERSONAL SAFETY
MANUAL (SECOND EDITION)
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WARNING: Disconnect primary power prior to servicing.
Table of Contents
Section 1
Introduction
Purpose of This Manual . . . . . . . . . . . . . . . . . . . . . . . 1-1
Features/Benefits . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
General Description . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Section 2
Installation
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Unpacking & Returns and Exchanges . . . . . . . . . . . . 2-1
Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Weight and Dimensions . . . . . . . . . . . . . . . . . . . . . . 2-1
Factory Test Data . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Transmitter/Transformer placement . . . . . . . . . . . . . 2-5
Transmitter/Transformer Cabinet Positioning . . . . . 2-6
Rack Rails Installation. . . . . . . . . . . . . . . . . . . . . . . 2-6
Air System And Cooling. . . . . . . . . . . . . . . . . . . . . . 2-6
Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
Grounding Connections . . . . . . . . . . . . . . . . . . . . . . 2-8
Power Supply Connections . . . . . . . . . . . . . . . . . . . . 2-9
Main Transformer Connections . . . . . . . . . . . . . . . . 2-9
Transmitter AC Connection. . . . . . . . . . . . . . . . . . 2-12
RF Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-16
Transmitter I/O Wiring . . . . . . . . . . . . . . . . . . . . . . 2-16
WAGO Connector Operation. . . . . . . . . . . . . . . . . 2-16
Basic Connections . . . . . . . . . . . . . . . . . . . . . . . . . 2-20
Digital Connections . . . . . . . . . . . . . . . . . . . . . . . . 2-20
External Carrier or 10 MHz Reference Use . . . . . 2-22
Interlock Loop Connections . . . . . . . . . . . . . . . . . 2-22
Initial Turn On . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-23
Remote I/O Connections . . . . . . . . . . . . . . . . . . . . . 2-24
Mod Monitor Setup . . . . . . . . . . . . . . . . . . . . . . . . . 2-27
Via Front Panel GUI . . . . . . . . . . . . . . . . . . . . . . . . 2-27
Via VT100. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-28
Jumper and Potentiometer Listing . . . . . . . . . . . . . . 2-28
Section 3
Operation
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Front Panel Functions and Displays. . . . . . . . . . . . . .
GUI Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
METER, POWER, INFO Menu Switches . . . . . . . .
UP, ENTER, DOWN - Parameter Controls . . . . . . .
3-1
3-1
3-2
3-2
3-2
FAULT, FOLDBACK, INTERLOCK Indications. . . 3-2
REMOTE DISABLE Switch and LED . . . . . . . . . . . 3-2
RAISE, LOWER - Power Level Controls . . . . . . . . . 3-2
ON Switch with LED Indication . . . . . . . . . . . . . . . . 3-2
OFF Switch with LED Indication . . . . . . . . . . . . . . . 3-2
Normal Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
Daily Pre-Operational Checkout . . . . . . . . . . . . . . . . 3-3
Transmitter Turn-On . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
Common Control Selections & Routine Metering . . 3-4
Adjusting GUI Display Contrast . . . . . . . . . . . . . . . 3-4
Selecting Power Levels 1 - 5 . . . . . . . . . . . . . . . . . . 3-5
To Set Desired RF Power Output Level . . . . . . . . . . 3-5
Metering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7
Status Screens via INFO Button . . . . . . . . . . . . . . . . 3-7
Digital Mode Selection . . . . . . . . . . . . . . . . . . . . . . . 3-8
Emergency Operation . . . . . . . . . . . . . . . . . . . . . . . . . 3-9
No Front Panel LEDs or GUI . . . . . . . . . . . . . . . . . . 3-9
FAULT LED Illuminated . . . . . . . . . . . . . . . . . . . . . . 3-9
Viewing the Fault Log . . . . . . . . . . . . . . . . . . . . . . . 3-9
GUI Screen or Front Panel Buttons Unresponsive . 3-10
Foldback. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10
DAX-1R PA Module Select - Optional . . . . . . . . . . 3-11
Manual Selection of Redundant PA Module . . . . . 3-11
Common Settings Via VT100 . . . . . . . . . . . . . . . . . . 3-12
VT100 Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12
VT100 - Page 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-13
SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-13
CURRENT STATUS . . . . . . . . . . . . . . . . . . . . . . . 3-15
METERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-16
VT100 - Page 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-17
Remote Control. . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-17
Power Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-18
Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-18
VT100 - Page 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-19
Section 4
Theory of Operation
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Exciter/Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
DSP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Synthesizer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Field Programmable Gate Array (FPGA). . . . . . . . . 4-2
Audio Input Data Analog/IBOC. . . . . . . . . . . . . . . . 4-2
Analog Power Supply Sense Input . . . . . . . . . . . . . . 4-2
Frequency Dependent Filter Board. . . . . . . . . . . . . . 4-3
Table of Contents (continued)
External I/O . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
Audio Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
Modulation Monitor . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
RS232 Interface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
Low Voltage Power Supplies . . . . . . . . . . . . . . . . . . 4-3
RF. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
PA Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
General Information . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
Motherboard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
Power Supply System . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
RF PA Power Supply (B+) . . . . . . . . . . . . . . . . . . . . . 4-6
AC Mains Input and Transformer Primary . . . . . . . . 4-7
AC Mains Input Protection . . . . . . . . . . . . . . . . . . . . 4-7
Transformer Secondary . . . . . . . . . . . . . . . . . . . . . . . 4-7
SCR Rectifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7
Output Voltage Regulation . . . . . . . . . . . . . . . . . . . . 4-7
DC Output Filtering . . . . . . . . . . . . . . . . . . . . . . . . . 4-8
Power Supply Controller . . . . . . . . . . . . . . . . . . . . . . 4-8
Main Controller Interface . . . . . . . . . . . . . . . . . . . . . 4-9
SCR Firing Board Interface . . . . . . . . . . . . . . . . . . 4-10
Power Supply Fault Status Reporting . . . . . . . . . . . 4-10
Samples to the Main Controller . . . . . . . . . . . . . . . 4-10
Over Current Protection . . . . . . . . . . . . . . . . . . . . . 4-10
DC Discharge Circuit . . . . . . . . . . . . . . . . . . . . . . . 4-11
Power Supply System I/O . . . . . . . . . . . . . . . . . . . . 4-11
Section 5
Maintenance and Alignments
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
Routine Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
Record Keeping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
Transmitter Logbook. . . . . . . . . . . . . . . . . . . . . . . . . 5-1
Maintenance Logbook. . . . . . . . . . . . . . . . . . . . . . . . 5-2
Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
Cleaning the Air Filter . . . . . . . . . . . . . . . . . . . . . . . 5-2
Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4
Change Remote Disable LED Color . . . . . . . . . . . . . 5-4
Bessel Filter Input Bandwidth Select . . . . . . . . . . . . . 5-4
Power Limit Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5
Via Front Panel GUI . . . . . . . . . . . . . . . . . . . . . . . . . 5-5
Via VT100 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5
Software Upgrade Procedure . . . . . . . . . . . . . . . . . . . . 5-6
Alignments. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8
VT100 Calibrations and Alignments . . . . . . . . . . . . . 5-8
Forward & Reflected Power Calibrations . . . . . . . . . 5-9
Forward Power Setting . . . . . . . . . . . . . . . . . . . . . . 5-10
Reflected Power Setting . . . . . . . . . . . . . . . . . . . . .
Reset Power Levels: . . . . . . . . . . . . . . . . . . . . . . . .
Parts Replacement. . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Supply Controller . . . . . . . . . . . . . . . . . . . . .
-12Vdc Adjustment . . . . . . . . . . . . . . . . . . . . . . . .
SCR Controller Board . . . . . . . . . . . . . . . . . . . . . . .
LVPS Replacement . . . . . . . . . . . . . . . . . . . . . . . . .
PA MOSFET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-11
5-12
5-14
5-14
5-16
5-17
5-18
5-19
Section 6
Troubleshooting
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
Fault Log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2
Viewing the Fault Log . . . . . . . . . . . . . . . . . . . . . . . 6-2
Fault Log Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3
Using VT100 for Metering, Status & Configuration. 6-3
VT100 - Page 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-5
VT100 - Page 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-9
VT100 - Page 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-11
VT100 - Page 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-12
VT100 - Page 5 . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-16
VT100 - Page 6 . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-20
General Troubleshooting Information . . . . . . . . . . . 6-24
Schematics, Wiring and Block Diagrams . . . . . . . . 6-24
3-Strike Routine. . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-24
Foldback Routine. . . . . . . . . . . . . . . . . . . . . . . . . . . 6-24
Turn DAX On With No RF Power Output . . . . . . . 6-25
On-Air PA Module Service . . . . . . . . . . . . . . . . . . . 6-25
Mod Replacement: Spare PA Mod . . . . . . . . . . . . . 6-25
Mod Replacement: Spare PA Dummy Mod. . . . . . 6-26
Fault Log Listing. . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-27
Power Supply System Troubleshooting . . . . . . . . . . 6-31
PA Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . 6-33
PA Module Faults . . . . . . . . . . . . . . . . . . . . . . . . . . 6-33
MOSFET Replacement . . . . . . . . . . . . . . . . . . . . . . 6-33
Audio Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . 6-34
Exciter/Controller Troubleshooting . . . . . . . . . . . . . 6-35
Board LED Indications. . . . . . . . . . . . . . . . . . . . . . 6-35
Testpoint Listing . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-36
Section 7
Parts List
Replaceable Parts List Index. . . . . . . . . . . . . . . . . . . . 7-1
DAX-1/DAX-3
Section 1
Introduction
1.1
1
Purpose of This Manual
This technical manual contains the information pertaining to the DAX-1/DAX-3
Enhanced AM transmitters. The various sections of this technical manual provide the
following types of information.
5/2/2013
•
Section 1, Introduction/Specifications, provides general manual layout, frontispiece,
equipment description, block diagram.
•
Section 2, Installation/Initial Turn On, provides physical and electrical installation
procedures for the transmitter, cooling and RF systems and basic remote control connections.
•
Section 3, Operation, provides operation and navigation information for the Graphical User Interface or GUI as well as identification and functions of all external panel
controls and indicators.
•
Section 4, Overall System Theory provides block diagram and detailed theory of
operation.
•
Section 5, Maintenance and Alignments, provides preventative and corrective maintenance information and all field alignment procedures.
•
Section 6, Diagnostics, provides detailed fault information and diagnostic procedures
to the board level.
•
Section 7, Parts List, provides a parts list for the overall transmitter as well as individual modules.
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1-1
Section 1 Introduction
DAX-1/DAX-3
Figure 1-1
DAX-1 Transmitter & Transformer Cabinet
1.2
Features/Benefits
Performance
1-2
•
Exceptional ruggedness using conservatively-rated RF modules based on the highly
successful Destiny 3DX transmitters
•
•
Modular architecture with on-air serviceable RF modules
Broadband design from the frequency synthesizer through the output filter, with frequency dependant components used only in the output network
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5/2/2013
Section 1 Introduction
DAX-1/DAX-3
•
•
•
•
•
Enhanced audio performance — even at low-power PSSA power levels
Loud-yet clean! With peak modulation to +145%
Linear high voltage power supply for simplicity and easy maintenance
Quiet DC-controlled cooling
Designed as a digital transmitter from the start, simply add a Harris Broadcast DEXSTAR IBOC exciter for a seamless IBOC transition
Intelligent User Interface
•
•
Extensive diagnostics and lower-stage metering
•
•
•
Extensive parallel user interface for remote metering, control and status
•
Five user preset power levels
Easy to control and monitor with software-driven LCD display that provides parameter metering, status, fault log retention, and set-up/configuration menu
Serial port for control, diagnostics, and configuration
Integrated remote-able switching from IBOC to analog-only mode, with status indication
Protection
5/2/2013
•
Designed to keep you on the air with comprehensive fault monitoring and recovery
including power limit protection for low-power antenna systems, and transient protection on AC input, antenna output, and remote inputs and outputs
•
Foldback protection from high VSWR keeps transmitter operating at reduced power
888-2500-001
WARNING: Disconnect primary power prior to servicing.
1-3
Section 1 Introduction
1.3
DAX-1/DAX-3
General Description
The DAX-1/DAX-3 is a state of the art solid state medium wave transmitter with a rated
output power of 1/3kW combining improved digital amplitude modulation technology
with APDM (Advanced PDM). The Direct Digital Drive (3D) system supplies the RF
amplifier with TTL level signals eliminating the need for a high-level drive chain,
splitters, cables and tuned circuits.
RAISE
1000 W
REMOTE
DISABLE
FAULT FOLDBACK INTERLOCK
POWER
Meter
LOWER
Power
INFO
Display
Interface
1
0
ON
OFF
Output
Monitor
Power Level 4
Output
Monitor
Output
Monitor
Front Panel
Interface
Mod Mon In
Mod Monitor Out
External I/O
RF
Sample
Synthesizer Out
MB1 PDM Sample
MB2 PDM Sample
External I/O
Exciter/Controller
10 MHz In
Audio & IBOC
Carrier In
B+
Sample
Digital Phase
In
PA Control
Interface
PA Control
Interface
LVPS
Interface
B+
Filter
Cap
RF
LVPS
Interface
RF Sample
PDM Sample
Filter
Cap
PA Control
Interface
Modulator
& PA
PS Control
Filter
Cap
Filter
Cap
Fan
Interfac e
Modulator
& PA
B+ Sample
Filter
Cap
Motherboard
Filter
Cap
Filter
Cap
LVPS
Interface
CB1
MOV
High
VAC
Low
PS
Controller
+48Vdc
Enerpro
SCR
Controller
LVPS
Interfac
e
Control and
-12V Supply
PS
Controller
+12Vdc
Figure 1-2
DAX-1 Simplified Block Diagram
1-4
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5/2/2013
DAX-1/DAX-3
Section 2
Installation
2.1
2
Introduction
This section details the procedures to receive, install, and prepare the transmitter for
use, as well as initial turn-on steps.
2.2
Unpacking & Returns and Exchanges
Refer to the second page of this manual for instructions on unpacking, inspecting, and
procedures in the event of any damages from shipment or omissions.
NOTE:
Retain all packaging materials in the event the transmitter would require factory
servicing.
2.2.1
Inspection
Prior to performing the installation of the DAX transmitter, it should be thoroughly
inspected for any connections which may have loosened during shipment. Also check
that all ribbon cables are properly locked into their respective printed circuit board
connectors, and that the PA modules are securely inserted. Check for debris or any other
loose hardware.
2.2.2
Weight and Dimensions
The DAX-1 weighs approximately 130 pounds/45 kg; DAX-1R: 140 pounds/63 kg;
and the DAX-3 weighs approximately 160 pounds/73 kg; and each has been designed
for rapid installation. It can be shipped in an optional rack or mounted in a customer
supplied rack, or simply installed on a small pedestal or table.
NOTE:
It is not recommended to install the basic DAX-1/DAX-3 cabinet on the floor.
5/2/13
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WARNING: Disconnect primary power prior to servicing.
2-1
Section 2 Installation
DAX-1/DAX-3
The size of the basic cabinet is 19" wide by 27.94" high by 22.88" deep. Keep in mind
that a minimum of 24 inches should be allowed for maintenance access from both the
front and rear of the cabinet.
The included NEMA enclosed transformer weighs approximately 97 pounds (43 kg)
for the DAX-1, and 162 pounds (73 kg) for the DAX-3 unit.
2.2.3
Factory Test Data
Locate and retain the FACTORY TEST DATA. During installation and initial turn on
procedures, reference will be made to FACTORY TEST DATA. This data is normally
packed in an envelope and may be inserted in the technical manual, or may be packed
with the Transmitter. This data includes meter readings, measured performance data,
information and data measured with external equipment, frequency determined parts
and adjustments specifically for your Transmitter’s operating frequency.
2.3
Installation
!
CAUTION:
ALL CONNECTIONS REFERRED TO IN THIS INSTALLATION PROCEDURE
SHOULD BE VERIFIED USING THE SCHEMATICS SUPPLIED WITH THE
TRANSMITTER. THE SCHEMATICS SHOULD BE CONSIDERED THE MOST
ACCURATE IN CASE OF A DISCREPANCY.
The installation section contains the information related to cabinet placement, intercabinet wiring, static checks, application of low-voltage and initial turn-on and initial
adjustments of the system.
2-2
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5/2/13
User Interface
5/2/13
Power Amplifier Modules
(DAX-3 Shown)
PA1
PA2
Relay
Module *
Exciter
Access Panel
RF Output
* - Relay Module used only for
DAX-1R (Redundant Module
Option – shown)
External
I/O Board
AC Entry (rear)
DAX-1/DAX-3
Section 2 Installation
Figure 2-1
Front Views of DAX-1 Transmitter
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2-3
Section 2 Installation
Removable Panel
Circuit Breaker
Fans &
Air Filters
Removable Panel
I/O Entry (front)
Removable
Power Supply
Output
Monitor
DAX-1/DAX-3
Figure 2-2
Rear Views of DAX-1 Transmitter
2-4
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5/2/13
Section 2 Installation
DAX-1/DAX-3
To facilitate proper installation and initial checkout, this data and the technical manual
should be carefully studied to obtain a thorough understanding of the principles of
operation, circuitry, nomenclature, and performance characteristics.
The transmitter installation is accomplished in the following order:
1. Transmitter/transformer placement
2. Air System and Cooling
3. Grounding
4. Power Supply connections
5. RF Connections
6. Transmitter Wiring
7. Initial Checkout
When necessary, refer to drawing titled Outline Drawing in your drawing package for
important DIMENSIONS, WEIGHT, AIR FLOW, and ELECTRICAL information.
2.3.1
Transmitter/Transformer placement
The DAX-1/DAX-3 shipment consists of:
•
•
•
•
•
•
•
•
•
•
DAX Transmitter Cabinet
Main Transformer in NEMA enclosure (includes 15’ AC power cable)
Pair of rack mount rails
Factory Test Data packet
Dummy Module
PA Service Key Card
(2) I/O cable RFI torroids
WAGO Connector Insertion Tool
DAX-1R: Redundant Module
OPTIONAL:
•
•
•
•
5/2/13
DEXSTAR Exciter
Uninterruptable Power Supply (UPS)
ePAL - Audio Interface & Synchronization Unit
Cable kit
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2-5
Section 2 Installation
2.3.1.1
DAX-1/DAX-3
Transmitter/Transformer Cabinet Positioning
Review the Outline Drawing to determine the size and placement of the transmitter at
your location. The transmitter and transformer should be located to permit adequate
maintenance access and sufficient ventilation.
!
CAUTION:
UNIT MUST NOT BE DROPPED. TWO PEOPLE ARE NEEDED TO REMOVE
THE CABINET FROM THE PALLETS, AND TO PLACE THE UNIT INTO A
CABINET OR WALL OPENING.
If the transmitter is to be positioned into a predetermined wall opening, be sure to allow
for any final leveling needed when figuring the wall opening dimensions.
NOTE:
The transformer can be located in the base of the rack in which the transmitter is
mounted, provided the rack meets access and ventilation requirements.
2.3.1.2
Rack Rails Installation
Locate the adjustable rack mount rails and install front to back, one on each side. Once
the location for the transmitter has been determined secure the rails using the provided
screws, with the wider flat weight-bearing portion facing up. Tighten all screws
including the length adjustment screws.
Carefully place the transmitter into the rack cabinet and secure with rack screws.
2.3.2
Air System And Cooling
Refer to the DAX-1/DAX-3 Cabinet Outline Drawing, for information on air flow
CFM, heat dissipation and duct work dimensions.
Cooling air for the transmitter enters through the back of the Cabinet and exhausts
through the front and top of the cabinet. If an exhaust duct is used, static pressure in the
duct must be neutral or slightly negative. Static pressure for air intake at the rear of the
transmitter must be neutral or slightly positive. The exhaust grills opening on the top of
the transmitter must not be restricted. This is an important consideration when a wall
will be installed along the front of the transmitter.
2-6
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5/2/13
Section 2 Installation
DAX-1/DAX-3
2.3.3
Grounding
A grounding strap between the transmitter and the station earth ground must be
properly connected before AC power wiring is attached to transmitter (see "2.3.3.1
Grounding Connections" on page 2-8 for complete procedure).
Grounding Basics
The importance of a good grounding system and lightning protection can hardly be
overemphasized for reasons of personnel safety, protection of the equipment, and
equipment performance. The following is only a brief overview.
Lightning and transient energy via the power line or tower connections can impose
serious threats to your personal safety as well as damage the equipment. For these
reasons you should have a good protective earthing system to divert these forms of
energy to earth ground. Proper grounding of the equipment also guards against
electrical shock hazards that would exist if the equipment failed in a way which put a
hazardous voltage on the chassis.
A good grounding system should include substantial grounding at the tower base using
copper ground rods and/or a buried copper ground screen, with copper strap used to
connect the tower base to earth ground. A low impedance will help carry lightning
current directly into the ground instead of into your building. Additionally, coax
shield(s) should be electrically connected to and exit the tower as near to the bottom as
practical to minimize the lightning voltage potential carried by the coax into your
building.
For multiple coax, a single point of entry into the building is best, with all connected to
a common grounding plate (or bulkhead panel) having a low impedance connection to
the building perimeter ground. Wide copper straps should be used for making the
connection from the common grounding plate to earth ground.
A common grounding plate is also the best location for coaxial surge protectors for
sensitive equipment such as an STL receiver. Ideally, this plate should also be the entry
point for all signal lines, and serve as a single point ground for AC power surge
protection.
A good ground system should include perimeter grounding of the transmitter building
using copper ground rods and copper strap. There should also be a copper strap running
from tower ground to the building perimeter ground.
Good grounding and shielding will help keep stray RF current to a minimum. RF
interference usually shows up in one of several ways, intermittent problems with digital
or remote control circuits, audio feedback or high pitched noise. Even a small amount
of non-shielded wire makes a very efficient antenna for RF and transient energy. If RF
is allowed into the audio equipment, it can be rectified and may show up as noise or
5/2/13
888-2500-001
WARNING: Disconnect primary power prior to servicing.
2-7
Section 2 Installation
DAX-1/DAX-3
feedback. Wire and cable shields should normally be connected at both ends to the
equipment chassis, audio cables should have the shield connected to ground on one side
only.
2.3.3.1
Grounding Connections
NOTE:
Once the transmitter has been correctly positioned it will be necessary to remove
the Front panel, Rear panel, and Fan panel for access to the transmitter connections. The Main Transformer top will also need to be removed for transformer
wiring in the following steps.
A ground strap attachment block, E10, is located on
the left rear floor (as viewed from the rear) of the
cabinet. Use this connection when utilizing a single
point grounding system, attaching your ground strap
to this common grounding point.
2-8
STEP 1
Route a 2" copper strap into the DAX
at the location of the cutout in the Fan
Panel (as shown in picture to the right)
STEP 2
Secure to the grounding block
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5/2/13
Section 2 Installation
DAX-1/DAX-3
Power Supply
Chassis Opening
("square slot")
B+ Supply
Connector J1/P1
PS Ground
Wire #98
Bottom AC
Entry
E10 Safety
Ground Block
Figure 2-3
E10 Safety Ground Block
(Shown with Fan Panel)
2.3.4
Power Supply Connections
Power supply connections are performed in two steps: Main Transformer connections,
followed by Transmitter AC Connections. These procedures follow below.
!
CAUTION:
WHEN NECESSARY REFER TO THE DRAWING TITLED "WIRING DIAGRAM"
FOR ELECTRICAL CONNECTIONS. SCHEMATIC DRAWING INFORMATION
WILL ALWAYS SUPERCEDE INFORMATION PROVIDED IN THIS TECHNICAL
MANUAL.
2.3.4.1
Main Transformer Connections
The NEMA transformer enclosure has two 1¼" holes for cable entry and exit.
5/2/13
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WARNING: Disconnect primary power prior to servicing.
2-9
Section 2 Installation
DAX-1/DAX-3
Use the following table to the determine correct fuse and wire gauge
STEP 1
Table 2-1
AC Mains Supply Wire Gauge and Fuse Size
DAX-1
DAX-3
Fuse Size
20
40
Wire Gauge
12 AWG
10 AWG
STEP 2
Connect the single-phase AC mains to the primary side of the Main
Transformer according to the following table to attain the desired match
to line conditions
Table 2-2
AC Line Connections:
Line
Condition
Transformer
Primary
Connections
Neutral
Line
220
230
240
0
0
0
220
230
240
210
-5%
220
250
+5%
240
NOTE:
As part of STEP 2, connect the Power Factor Correction capacitor leads across
the same studs that the AC line and neutral leads connect to (see Figure 2-5
below).
2-10
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5/2/13
Section 2 Installation
DAX-1/DAX-3
+5%
Common
0
-5%
LV
220
230
240
HV
Figure 2-4
Main Transformer Schematic
STEP 3
Connect the AC mains input safety ground wire to the E5 safety ground
stud within the transformer enclosure (see Figure 2-5 below), labeled
"Earth Ground"
Once the primary side of the Main Transformer has been connected, the secondary
output can be connected to the DAX transmitter via the included 15’ 4-conductor Power
Cable. If a length change is required, additional ring lugs are included.
STEP 4
Attach Power Cable to secondary terminals as follows
• Black to HV terminal
• Red to LV terminal
• White to Common terminal
• Green to E5 safety ground stud
STEP 5
5/2/13
Route the cable toward the DAX transmitter, and proceed to the next
section, "2.3.4.2 Transmitter AC Connection"
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2-11
Section 2 Installation
DAX-1/DAX-3
E5
Safety Ground
Power Factor
Correction
Capacitor Leads
Primary Side
Secondary Side
Figure 2-5
Main Transformer Wiring View - DAX-1/DAX-1R
2.3.4.2
Transmitter AC Connection
NOTE:
To improve access to CB1, it will be helpful to slide the power supply chassis
partially out the rear of the transmitter cabinet. Use the following steps to gain the
necessary access to CB1.
2.3.4.2.1 PS Chassis Access
STEP 1
If not already done, remove front, rear and fan panels
STEP 2
Remove 2 power supply grounding screws on front inner chassis wall,
just below the Exciter and I/O boards
STEP 3
Remove the 2 top screws on the rear of the power supply chassis
STEP 4
Unplug the following 2 connectors from the PS Controller board and
pull down through corresponding slots into PA cavity
• J2 - LVPS power distribution cable
• J3 - PS Control cable
2-12
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5/2/13
Section 2 Installation
DAX-1/DAX-3
NOTE:
For the next 2 steps see Figure 2-3, above, for reference.
STEP 5
Disconnect the B+ Supply by pulling apart the gray Wago connector J1/
P1 (white wire pair, passing through square slot on left) and pull up
through slot into PS chassis
STEP 6
Unscrew Safety Ground cable (#98, green with yellow stripe) where it
connects to the safety ground block, E10 on floor of transmitter, and pull
up through square slot into PS chassis
STEP 7
Make sure all cables and connectors are cleared, and adjust any as
needed, then carefully slide chassis to rear as far as necessary to provide
access
STEP 8
Connect AC Power Cable to CB1 and E1 as shown in section "2.3.4.2.2
Top Entry" on page 2-14 or "2.3.4.2.3 Bottom Entry" on page 2-14,
below, for complete procedure
To reinstall power supply chassis after the AC Power Cable has been secured:
STEP 9
!
Make sure all cables and connectors are cleared, and adjust any as
needed, then carefully slide chassis back into transmitter cabinet - See
important CAUTION below
CAUTION:
IF THE TOP ENTRY METHOD IS USED IT WILL BE NECESSARY TO PULL THE
POWER CABLE BACK UP, FROM THE AC ENTRY POINT, AS YOU SLIDE THE
POWER SUPPLY CHASSIS BACK IN. IF THIS IS NOT DONE THE EXCESS
CABLE INSIDE THE PS CHASSIS COULD DAMAGE PS CONTROLLER BOARD
COMPONENTS.
5/2/13
STEP 10
Pull down and reconnect Safety Ground cable to safety ground block
E10 on floor of DAX
STEP 11
Reconnect B+ Supply connectors
STEP 12
Pull up, through corresponding slots, and reconnect 2 cables to J2 and J3
STEP 13
Replace 2 rear top screws
STEP 14
Replace 2 front grounding screws
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2-13
Section 2 Installation
DAX-1/DAX-3
2.3.4.2.2 Top Entry
The top entrance for the AC power cable is a circular opening, located on the rear-right
top (as viewed from the front of DAX) of the cabinet. This entry provides a channel,
routing the cable directly to a sidewall exit just above the circuit breaker CB1 terminals
in the power supply section of the DAX transmitter.
STEP 1
To improve access to CB1, perform steps in section "2.3.4.2.1 PS
Chassis Access" above
STEP 2
Feed AC Power Cable down through entry opening
STEP 3
Pull cable into cabinet from channel exit opening
STEP 4
Remove cover over CB1 by removing 2 screws and sliding cover toward
right
STEP 5
Attach Power Cable wires to CB1 top terminals as follows (see Figure 26 below):
• HV (black) to terminal closest to sidewall
• LV (red) to middle terminal
• Common (white) to terminal farthest from sidewall
• Ground (green) to E1 stud (on sidewall just below CB1) for safety
ground
STEP 6
Replace CB1 cover
2.3.4.2.3 Bottom Entry
The AC power cable may also be routed up from underneath the DAX via a circular
hole in the floor of the transmitter. This hole is located just behind (as viewed from the
rear of the DAX) the ground strap system and E10 Safety Ground block. See Figure 2-6
on page 2-15 for reference.
2-14
STEP 1
To improve access to CB1, perform steps in section "2.3.4.2.1 PS
Chassis Access" above
STEP 2
Feed AC Power Cable up through bottom entry opening
STEP 3
Route cable into power supply chassis via square slot below CB1 (see
Figure 2-3 on page 2-9 above)
STEP 4
Remove cover over CB1 by removing 2 screws and sliding cover toward
right
STEP 5
Attach Power Cable wires to CB1 top terminals as follows (see Figure 26 below):
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Section 2 Installation
DAX-1/DAX-3
• HV (black) to terminal closest to sidewall
• LV (red) to middle terminal
• Common (white) to terminal farthest from sidewall
• Ground (green) to E1 stud (on sidewall just below CB1) for safety
ground
STEP 6
Replace CB1 cover
HV Terminal
(Black)
LV Terminal
(Red)
Common
Terminal
(White)
E1 Safety
Ground Stud
(Green)
Figure 2-6
Transformer Power Cable Connections to CB1 & E1
(As viewed from the rear)
At this point the AC wiring is complete, however, it is not recommended to engergize
the AC mains supply or CB1 at this time. Upon completion of the required steps prior to
the section "2.4 Initial Turn On" on page 2-23 of this manual, the AC mains my be
turned on according to that section.
5/2/13
888-2500-001
WARNING: Disconnect primary power prior to servicing.
2-15
Section 2 Installation
2.3.5
DAX-1/DAX-3
RF Connections
NOTE:
Place a piece of cardboard over exhaust holes in top of cabinet when working
with small hardware that could fall through during installation.
Carefully connect the output transmission line from the antenna to the 7/8 EIA flange
connector for the DAX-3, or N-connector for the DAX-1 located on the top rear of
the cabinet.
2.3.6
Transmitter I/O Wiring
The entrance for I/O cabling is a circular opening, located on the front-right top (as
viewed from the front of DAX) of the cabinet. This entry provides a direct path towards
the remote terminals on the External I/O board. See Figure 2-7 on page 2-19 for a view
of the connections on the right side of this board.
For additional wiring required for any extra equipment that may be mounted in the
upper cavity there are two more openings just to the left (as viewed from the front of
DAX) of the exhaust holes near the rear on the DAX transmitter’s top. These may be
used as desired for other installation needs.
2.3.6.1
WAGO Connector Operation
The DAX transmitter utilizes the WAGO 733-series connectors for remote terminal
connections. Follow the procedure below to facilitate a quick and secure hook up for
your I/O signal cables.
STEP 1
Prepare cables by removing 1/4" of jacket
STEP 2
Twist exposed wire ends
NOTE:
Do not solder these wire ends. The WAGO connector works best with unsoldered
strand-type wire.
STEP 3
2-16
Locate the supplied tool, or a narrow insertion tool (small jewelers
screwdriver) and the included female connector blocks
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Section 2 Installation
DAX-1/DAX-3
5/2/13
STEP 4
Press the tool tip completely into the hole associated with the pin # to be
connected (NOTE: There is also corresponding slots on the side of
connector block where a small screwdriver may be used to momentarily
press in while inserting the wire)
STEP 5
Carefully press the wire into the corresponding receptacle
STEP 6
Remove tool
STEP 7
Examine connection for security
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2-17
Section 2 Installation
STEP 8
2-18
DAX-1/DAX-3
Repeat for all WAGO 733-series connections
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Section 2 Installation
DAX-1/DAX-3
Figure 2-7
External I/O Board Remote Connections
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Section 2 Installation
2.3.6.2
DAX-1/DAX-3
Basic Connections
The following procedures refer to the External I/O board which is located behind the
Controller/External I/O panel on the front of the DAX. To perform these connections
this panel will need to be removed.
NOTE:
It is recommended that any remote control or status connections be made only
after the transmitter has been initially turned on and operation verified. However,
the Interlock loop will need to be satisfied in order for the DAX to be able to be
turned on (See "2.3.6.5 Interlock Loop Connections" on page 2-22).
NOTE:
For RFI rejection, torroid cores are provided for I/O cabling coming in to the
DAX. Route all audio cables through (and around one time) one core. Route all
command and status cables through (and around one time) the other provided
core.
2.3.6.2.1 Analog Audio
Once the analog audio cable is exiting into the DAX, connect it to the J13 WAGO
block, ANLG AUDIO, on the External I/O board: Audio(+) to J13-1, Audio(-) to J13-2,
and ground to J13-3.
2.3.6.3
Digital Connections
For IBOC operation, the following connections and settings will need to be made. Once
these are complete the DAX will need to be put into IBOC mode via the front panel
control (see "3.3.4 Digital Mode Selection" on page 3-8).
2.3.6.3.1 Digital Phase Input
Route the IBOC phase output (from A11J5 AM PHASE OUT on the DEXSTAR
exciter) to the J14 BNC connector, DIGITAL PHASE INPUT, on the External I/O
board.
2.3.6.3.2 Digital Magnitude Input
Route the IBOC Mag cable (from A13J14 AM MAG OUT on the DEXSTAR exciter)
to the J15 WAGO block, DIGITAL AM MAG on the External I/O board: MAG(+) to
J15-1, MAG(-) to J15-2, and ground to J15-3.
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Section 2 Installation
DAX-1/DAX-3
2.3.6.3.3 Bessel Filter Input Bandwidth Select
For digital operation be sure S2, S3, and S4 switches, located on the Exciter/Controller
board, all have the #1 switch in the up position, and the rest down. This is for full 50
kHz bandwidth operation required for domestic IBOC broadcast. Narrow-mode AM
utilized in countries other than the USA will find the other filter settings useful to match
their system.
NOTE:
In Table 2-3 below, the number indicates the only switch to be in the UP position.
The other 3 positions on each switch will all be in the DOWN position.
Table 2-3
Bessel Filter Bandwidth Switch Settings
Desired Input
Bandwidth
S2
S3
S4
50 kHz
1
1
1
10 kHz
2
2
2
9 kHz
3
3
3
4.5 kHz
4
4
4
2.3.6.3.1 RMT Digital Present Input
For digital operation the DAX transmitter will need verification that the digital exciter
is indeed online. If your system includes the optional DEXSTAR and ePAL
combination, this will be a +5V signal from the ePAL Exciter Interface output A1J2-10
applied to J7-7 on the External I/O board. DIGITAL PRES RETURN, J7-6, must be
used as the return for the +5V from the ePAL, and be connected directly to an ePAL
ground.
If this signal is not available for your installation, the RMT Digital Present, J7-7, must
be tied to "+5V" at J12-6 on the External I/O board, and the Digital Present Return line
must be connected to a GNDC on the External I/O.
NOTE:
If this line is not held high, the DAX transmitter will revert to Analog mode, and
Digital mode will not be allowed. If this line goes low temporarily, Digital mode
must be re-selected (see "3.3.4 Digital Mode Selection" on page 3-8).
5/2/13
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Section 2 Installation
2.3.6.4
DAX-1/DAX-3
External Carrier or 10 MHz Reference Use
To use an externally generated carrier signal or 10 MHz reference signal, route the cable
to BNC connectors J11 for the external carrier or J10 for the 10 MHz reference on the
External I/O board. External carrier or 10 MHz reference must then be enabled via the
VT100 screen per the procedure below (See "6.2.2 Using VT100 for Metering, Status &
Configuration" on page 6-3, for accessing the page 4 VT100 configuration screen).
Follow this procedure to enable or disable either of these signal inputs:
STEP 1
Initiate VT100 programming and navigate to page 4
STEP 2
Type either "o" for 10 MHz Reference, or "p" for Carrier, to toggle the
selection between Internal or External for that signal
STEP 3
Selected action takes place within 1 second
2.3.6.5
Interlock Loop Connections
For normal operation the interlock relay must be closed creating a +12Vdc loop. If the
loop opens, a sense line to the PS Controller goes below a 10V threshold and the DAX
will mute and be de-energized to an Off condition. This loop is provided at J12 on the
External I/O board as INTLK LOOP, J12-2; and INTLK LOOP RETURN, J12-1.
NOTE:
If no external interlock loop is used, a shorting jumper wire must be placed across
J12-2 to J12-1 in order for the DAX transmitter to operate.
2-22
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Section 2 Installation
DAX-1/DAX-3
2.4
Initial Turn On
Each transmitter is thoroughly checked out during factory final test but some
adjustments may be required during installation due to shipping, variations in primary
power, antenna systems, or transmission line differences.
!
CAUTION:
ANY REMOTE OR EXTENDED CONTROL CONNECTIONS SHOULD BE
CONNECTED ONLY AFTER THE TRANSMITTER IS CHECKED OUT AND
FULLY OPERATIONAL.
Refer to the Factory Test Data Sheets supplied with the transmitter for typical meter
readings. The transmitter was checked into a 50-ohm resistive load at the Factory.
Follow these steps to bring the DAX transmitter online for the first time:
STEP 1
If not already done, replace any doors and panels that had been removed
during previous steps
STEP 2
Activate the AC mains source to the transmitter
STEP 3
Turn on the low voltage power supply breaker, CB1, located in the rear
of the transmitter cabinet
STEP 4
Verify that the GUI display on the Front Panel is active, and the red LED
above the OFF button is lit or blinking
STEP 5
Press and hold the OFF button for >2 seconds (control reset)
STEP 6
Simultaneously press and hold both RAISE and LOWER buttons for 5
seconds (for no RF power output with ON command)
STEP 7
Press ON button
STEP 8
Verify fan operation
STEP 9
Press the RAISE button to slowly ramp up RF power to desired level
(this will be a temporary level setting)
STEP 10
Verify correct transmitter operation
Proceed to section "3.3 Normal Operation" on page 3-3 in the third chapter of this
manual for detailed operational information
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2-23
Section 2 Installation
2.5
DAX-1/DAX-3
Remote I/O Connections
Once the DAX transmitter has been turned on for the first time and correct operation
has been verified, remote connections may be made. Using the following tables, Figure
2-7 on page 2-19, and the supplied schematic package, configure the DAX remote I/O
to match the requirements of your interface equipment.
NOTE:
Torroid cores are provided for I/O cabling coming in to the DAX to for RFI rejection. Route all audio cables through (and around one time) one core. Route all
command and status cables through (and around one time) the other provided
core.
Table 2-4
Remote Command Inputs and Functions
J(n)
COMMAND NAME
ACTIVE
FUNCTION
J5-11
RMT On
Low Pulse
Turns DAX on with low pulse
J5-10
RMT Off
Low Pulse
Turns DAX off with low pulse
J5-9
RMT Raise
Low Pulse
Raises power with low pulse
J5-8
RMT Lower
Low Pulse
Lowers power with low pulse
J5-7
RMT RF Mute
Low State
Mutes DAX while active
J5-5
RMT PWR LVL SEL1
Low Pulse
Selects Power Level 1 with low pulse
J5-4
RMT PWR LVL SEL2
Low Pulse
Selects Power Level 2 with low pulse
J5-3
RMT PWR LVL SEL3
Low Pulse
Selects Power Level 3 with low pulse
J5-2
RMT PWR LVL SEL4
Low Pulse
Selects Power Level 4 with low pulse
J7-11
RMT PWR LVL SEL5
Low Pulse
Selects Power Level 5 with low pulse
J7-10
RMT Analog Mode SEL
Low Pulse
Selects Analog Mode with low pulse
J7-9
RMT Digital Mode SEL
Low Pulse
Selects Digital Mode with low pulse
J7-8
RMT Power Limit SEL
Low State
Lowers power to pre-set level while active
J7-7
RMT DIGITAL
PRESent
High State
DEXSTAR operational while active
J5-12
GNDC
-
Command return
J5-6
GNDC
-
Command return
2-24
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Section 2 Installation
DAX-1/DAX-3
Table 2-4
Remote Command Inputs and Functions
J(n)
COMMAND NAME
ACTIVE
FUNCTION
J5-1
GNDC
-
Command return
J7-12
GNDC
-
Command return
J7-6
DIGITAL PRESent
RETURN
-
RMT Digital Present command return
See 2nd Note below
NOTE:
The Remote Commands are referenced to the customer ground, which is allowed
to float 30V above or below the system ground. It is recommended to connect all
Command signal returns to a GNDC connection. All remote commands are optically isolated and have a 10mA nominal sink current. The maximum allowed
voltage is 30V; the minimum is -2V. With the exception of RMT OFF and RMT
RF MUTE, all remote commands are disabled when operating in Remote Disable. The majority of commands are momentary and must be pulled to their
active level for a minimum of 200 mS to be registered. However, RMT RF Mute
and RMT Power Limit SEL are steady-state active low signals, while RMT Digital Present is a steady-state active high signal.
NOTE:
Digital Present Return must be connected to a DEXSTAR/ePAL ground. If RMT
Digital Present is not being used, this return line must be connected to GNDC.
Table 2-5
Remote Status Outputs and Functions
J(n)
STATUS NAME
ACTIVE
FUNCTION
J7-4
PWR LVL STAT1
Low State
Power Level 1 Selected when active
J7-3
PWR LVL STAT2
Low State
Power Level 2 Selected when active
J7-2
PWR LVL STAT3
Low State
Power Level 3 Selected when active
J9-11
PWR LVL STAT4
Low State
Power Level 4 Selected when active
J9-10
PWR LVL STAT5
Low State
Power Level 5 Selected when active
J9-9
On STAT
Low State
Transmitter On when active
J9-8
RF Mute STAT
Low State
Transmitter in Mute condition when active
J9-6
Summary FLT STAT
Low State
Transmitter in Fault condition when active
J9-5
VSWR FLT STAT
Low State
VSWR Fault is present when active
J9-4
Foldback Active STAT
Low State
Transmitter in Foldback when active
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Section 2 Installation
Table 2-5
DAX-1/DAX-3
Remote Status Outputs and Functions
J(n)
STATUS NAME
ACTIVE
FUNCTION
J9-3
Remote Disable STAT
Low State
Remote Control disabled when active
J9-2
Digital Mode STAT
Low State
Digital Mode enabled when active
J7-5
GND
-
Status return
J7-1
GND
-
Status return
J9-12
GND
-
Status return
J9-7
GND
-
Status return
J9-1
GND
-
Status return
NOTE:
The Remote Statuses are referenced to the transmitter ground. It is recommended
to connect all Status signal returns to a GND connection. The maximum allowed
voltage on the remote status lines is 30V, the minimum is -2V. The remote status
lines can sink 100mA. All status lines are steady-state active low (sinking current
when active).
Table 2-6
Analog Status Outputs and Functions
J(n)
STATUS NAME
ACTIVE
FUNCTION
J12-11
EXT FWD
Power Sample
Analog Range
= 0 - 4Vdc
Rated Nameplate Power = 3.0Vdc
J12-9
EXT DC
Current Sample
Analog Range
= 0 - 4Vdc
45A = 3.0Vdc
J12-8
EXT DC
Voltage Sample
Analog Range
= 0 - 4Vdc
260Vrms = 3.0Vdc
J12-6
+5Vdc Supply
-
+5V current-limited source (relative to
GND) for external purposes
NOTE:
The Analog Statuses are linearly scaled DC voltage representations of their corresponding signals.
2-26
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Section 2 Installation
DAX-1/DAX-3
2.6
Mod Monitor Setup
To properly interface the DAX transmitter with a modulation monitor across the 5
power levels, each power level must have a corresponding Mod Monitor Level setting.
These settings will need to be adjusted, after the power levels have been set (see
"3.3.3.3 To Set Desired RF Power Output Level" on page 3-5), to correctly drive the
mod monitor input. This is done via the GUI or by using the VT100 serial programming
capability.
NOTE:
Minimum load impedance at the Mod Monitor Out (J4) is 500 Ohms.
2.6.1
Via Front Panel GUI
The following steps will take you to the Mod Monitor Setup screens:
STEP 1
Connect mod monitor to J4 on the External I/O board
STEP 2
Select Power Level 1 (see "3.3.3.2 Selecting Power Levels 1 - 5" on page
3-5)
STEP 3
Pressing the INFO button takes you to the submenu screen
STEP 4
Select SETUP SUBMENU using the UP or DOWN buttons
STEP 5
Press ENTER and scroll down to bring up below screen
Figure 2-8 Mod Monitor Setup Screen
5/2/13
STEP 6
Scroll to desired level to edit
STEP 7
Press ENTER to highlight that line
STEP 8
While observing the mod monitor, use up/down arrows to adjust the
MONITOR output to the level required
STEP 9
Press ENTER to store value
STEP 10
Repeat steps 2 - 9 (except change to the next desired power level in Step
2, and at Step 6 scroll to select the next Mod Monitor Level) for each
desired Mod Monitor Level adjustment
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Section 2 Installation
DAX-1/DAX-3
NOTE:
If power levels are re-programmed, the Mod Monitor Levels will also need to be
re-programmed for accurate modulation monitoring using the correct input drive.
2.6.2
Via VT100
See "6.2.2 Using VT100 for Metering, Status & Configuration" on page 6-3,
particularly the note and following screen on page 6-12 for accessing the page 4 VT100
configuration screen for the following procedure.
STEP 1
Connect mod monitor to J4 on the External I/O board
STEP 2
Select Power Level 1 (see "3.3.3.2 Selecting Power Levels 1 - 5" on page
3-5)
STEP 3
Initiate VT100 programming and navigate to page 4
STEP 4
Type the letter "f" for Mod Monitor Level 1
STEP 5
While observing the mod monitor, use up/down arrows to adjust the
Mod Monitor output to the level required
STEP 6
Press ENTER to store value
STEP 7
Repeat steps 2 - 6 (except change to the next desired power level in Step
2, and at Step 4 type the corresponding letter for the next Mod Monitor
Level) for each desired Mod Monitor Level adjustment
NOTE:
If power levels are re-programmed, the Mod Monitor Levels will also need to be
re-programmed for accurate modulation monitoring using the correct input drive.
2.7
Jumper and Potentiometer Listing
NOTE:
Harris Broadcast utilizes the letter ’R’ as a designator for all resistors including
potentiometers.
2-28
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Section 2 Installation
DAX-1/DAX-3
The following table lists pertinent jumpers and potentiometers, and provides their
corresponding designator value and function within each board in the DAXtransmitter.
Table 2-7
DAX Jumpers and Potentiometers Listing
JP/R
(n)
NAME
Location
FUNCTION
JP1
Select either green or red Front
Panel LED during remote disable
External I/O
1-2 = Green @ remote disable
2-3 = Red @ remote disable
JP2
Ref. 10MHz input impedance select:
50 or 10k Ohms
External I/O
Short (in) = 50 Ohms
Open (removed) = 10k Ohms
JP3
RF Carrier input impedance select:
50 or 10k Ohms
External I/O
Short (in) = 50 Ohms
Open (removed) = 10k Ohms
JP4
(+) Input impedance select
External I/O
Short (in) = 600 Ohms
Open (removed) = 20k Ohms
JP5
(-) Input impedance select
External I/O
Short (in) = 600 Ohms
Open (removed) = 20k Ohms
JP6
IBOC Phase input impedance select:
50 or 10k Ohms
External I/O
Short (in) = 50 Ohms
Open (removed) = 10k Ohms
AC Low Trip Adjust
(early revision boards)
External I/O
AC Low Trip Adjust - Factory
use only
R118
(R107)
JP1
Back-up 10MHz clock reference
select
Exciter
Controller
1-2 = Clock reference 1
2-3 = Clock reference 2
JP2
Back-up 10MHz clock reference
select
Exciter
Controller
1-2 = Clock reference 1
2-3 = Clock reference 2
R25
RF SAMPLE
Exciter
Controller
Sets RF Sample level
(TP10)
R32
PDM ADJ
Exciter
Controller
Sets PDM Sample level
(TP13) - Factory use only
R37
IBOC MAG GAIN ADJUST
Exciter
Controller
Sets IBOC Mag level for A/D
converter input (TP22) - Adjust
for proper sidebands.
R39
AUDIO GAIN ADJUST
Exciter
Controller
Sets analog audio level for A/D
converter input (TP22) - Adjust
for 95% modulation at 10 dBm
audio input.
R43
+VS_DTG
Exciter
Controller
Dead Time Generator voltage
adjustment (TP29 - 1V per
100kHz of Carrier) - Factory
use only
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Section 2 Installation
Table 2-7
DAX-1/DAX-3
DAX Jumpers and Potentiometers Listing
JP/R
(n)
NAME
Location
FUNCTION
R44
2nd HARMONIC
Exciter
Controller
Nulls 2nd harmonic and
balances Bridge A/B (TP27/
TP28) - Factory use only
R45
BRIDGE A/B
Exciter
Controller
Sets dead time on Bridge A/B
for 65nS ±3nS (TP27/TP28)
R56
RFL POWER
Exciter
Controller
Sets reflected power trip point
(TP30) - Factory use only
JP1
PA2_TO_PA1_INTLK
Motherboard
Set 1-2 to continue interlock
onto next PA
JP2
PA3_TO_PA2_INTLK
Motherboard
Set 1-2 to continue interlock
onto next PA
2-30
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5/2/13
DAX-1/DAX-3
3
Section 3
Operation
3.1
Introduction
This section contains normal day-to-day operational procedures and information
pertaining to the function of the DAX-1/DAX-3 Digital AM Transmitter. All of the
information in this section assumes the transmitter is in proper working order.
3.2
Front Panel Functions and Displays
The Front Panel of the DAX transmitter is the control center for normal operational
commands.
GUI Screen
FAULT LED
INTERLOCK LED
ON & OFF
Buttons
FOLDBACK LED
Parameter
Controls
METER
Menu Button
POWER
Menu Button
INFO
Menu Button
REMOTE
DISABLE
Switch/LED
POWER
RAISE/LOWER
Controls
Figure 3-1
DAX Front Panel
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3-1
Section 3 Operation
3.2.1
DAX-1/DAX-3
GUI Screen
Software-driven, 4-line LCD for metering and diagnostics textual display.
3.2.2
METER, POWER, INFO Menu Switches
Pressing one of these three buttons will take you to the next layer of menus for
extensive metering, status information, and configurable parameters. Once within one
of these menus, the UP, ENTER, and DOWN controls are used to maneuver through
them.
NOTE:
It is normal operation for the Power Meter display to vary ±1%.
3.2.3
UP, ENTER, DOWN - Parameter Controls
These are the navigation buttons for selecting and maneuvering through layers and
parameters for status and editing capabilities within the METER, POWER, and INFO
menus.
3.2.4
FAULT, FOLDBACK, INTERLOCK Indications
LED indicators for Fault, Foldback, and Interlock conditions of the DAX transmitter.
3.2.5
REMOTE DISABLE Switch and LED
A press of this switch disables all remote control of the DAX transmitter. This can be
set by a jumper to be either green or red in the disabled condition, according to user
preference.
3.2.6
RAISE, LOWER - Power Level Controls
For quick fine adjustments of RF power level. Press and hold RAISE to reach up to
15% over preset value, or press and hold LOWER to decrease the power to as low as
zero Watts RF.
3.2.7
ON Switch with LED Indication
To turn the transmitter on, press this button. Press and hold to clear faults.
3.2.8
OFF Switch with LED Indication
To turn the transmitter off, press this button. Blinking LED indicates the DAX has been
faulted OFF.
3-2
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Section 3 Operation
DAX-1/DAX-3
3.3
Normal Operation
NOTE:
It is important that the operator be aware of normal transmitter operation and performance, and note any changes or fault indications. Changes in operation may
indicate a need for maintenance or corrective action before more serious problems develop.
3.3.1
Daily Pre-Operational Checkout
Before normal daily turn-on, review the following areas of the transmitter;
a. Check the transmitter maintenance log to make sure that maintenance performed
on the transmitter, or any abnormal conditions, do not restrict the operation of the
transmitter.
b. Ensure the transmitter RF output is connected to the proper load or antenna/pattern.
c. Check the User Interface panel on the front of the transmitter for any abnormal
indications.
NOTE:
A voltage reading is considered normal if it is within ±5% of its stated value.
When the preoperational checkout has been performed and no problems are present, the
transmitter is ready to turn on.
3.3.2
Transmitter Turn-On
NOTE:
Although all functions available on the Front Panel are also accessible via a serially connected PC via VT100 emulation, the following information describes
procedures utilizing only the Front Panel controls. For common settings available via VT100 see "3.5.2 VT100 - Page 1" on page 3-13.
For calibration and alignment procedures using VT100 see "5.5.1 VT100 Calibrations and Alignments" on page 5-8.
For troubleshooting and deep metering and status abilities see "6.2.2 Using
VT100 for Metering, Status & Configuration" on page 6-3.
View the GUI screen to verify correct power level is selected than press ON. Within 4
seconds the DAX transmitter should be outputting selected RF power, and all
indications normal.
The default screen indicates the current power in Watts, along with the currently
selected power level and looks similar to below.
5/2/2013
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3-3
Section 3 Operation
DAX-1/DAX-3
Figure 3-2 Main (default) Screen
3.3.3
Common Control Selections & Routine Metering
This section covers the most common uses of the GUI.
The following symbols for the DAX transmitter GUI screen apply throughout all levels
of menus.
 - More parameters available by pressing the UP button only
 - More parameters available by pressing the DOWN button only
 - Current Selection: More parameters available by pressing either the UP or DOWN
buttons
 - Selection: More parameters available within this function upon ENTER press
3.3.3.1
Adjusting GUI Display Contrast
To adjust the contrast of the GUI display to compensate for viewing angle or ambient
light conditions, follow the procedure below.
STEP 1
Press the INFO button to navigate to the submenu screen
STEP 2
Select SETUP SUBMENU using the UP or DOWN buttons
STEP 3
Press ENTER to bring up below screen
Figure 3-3 Setup Screen
NOTE: DAX-1R (Redundant PA option) Screen Shown
3-4
STEP 4
Scroll to CONTRAST and press ENTER
STEP 5
Adjust the display to desired contrast
STEP 6
Press ENTER to store that value
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5/2/2013
Section 3 Operation
DAX-1/DAX-3
3.3.3.2
Selecting Power Levels 1 - 5
DAX transmitters will be preset at the factory to the customer specified Power Levels 1
- 5. If the power levels have not been specified, the factory defaults are:
Table 3-1
Default Power Levels
Power Level
DAX-1/1R
DAX-3
DAX-5
DAX-6
1
200W
500W
1000W
1000W
2
400W
1000W
2000W
2000W
3
600W
1500W
3000W
3000W
4
800W
2000W
4000W
5000W
5
1000W
3000W
5000W
6000W
To change to a different pre-set Power Level, follow these steps:
STEP 1
Starting from the Main screen, press the POWER menu button to
highlight the PWR LEVEL number on the bottom line of GUI
Figure 3-4 Power Level Highlighted View
STEP 2
Using the UP and DOWN buttons select your choice of Power Level 1
through Power Level 5 (note level range ’preview’ in small numbers to
the right)
STEP 3
Once selected, hit ENTER to make that power level active
3.3.3.3
To Set Desired RF Power Output Level
Once the exact desired power levels for your station have been determined, use the
following procedure to configure as many of the 5 available presets as needed.
Power Level Range settings are where the DAX transmitter is programmed to run in a
preferred range that optimizes the performance and minimizes the distortion through
software and hardware alignment of power supply system and RF power output. After
the ’Range’ is set, the actual RF power output may need to be adjusted to match your
requirements.
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3-5
Section 3 Operation
DAX-1/DAX-3
NOTE:
This procedure requires 2 separate sets of steps (Power Level Range: Steps 1 - 8,
and Actual RF Power Output: Steps 9 - 13) for each power level desired.
STEP 1
Press the INFO button to take you to below screen
Figure 3-5 INFO Screen
STEP 2
Select LEVEL SUBMENU using the UP or DOWN buttons
STEP 3
Press ENTER to bring up below screen
Figure 3-6 Level Range Screen
STEP 4
Select desired Power Level Range value using the UP or DOWN buttons
STEP 5
Press ENTER to select
STEP 6
Adjust range using the UP or DOWN buttons
STEP 7
Press ENTER to accept range value for that power level
STEP 8
Repeat STEP 4 through STEP 7 for remaining Power Levels
Next time that power level is active the DAX will operate within that range.
Once the Power Level Ranges have been set for the Power Levels 1 - 5, continue with
the procedure below to set the actual RF power output:
3-6
STEP 9
Press the POWER button to return to main screen
STEP 10
Select the desired Power Level 1 - 5 (see "3.3.3.2 Selecting Power
Levels 1 - 5" on page 3-5)
STEP 11
Raise or lower the RF power by using the RAISE or LOWER buttons on
the front panel
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Section 3 Operation
DAX-1/DAX-3
STEP 12
After the desired power value has been attained using one of these
buttons, press and hold ENTER for >3 seconds (wait for reverse video to
flash, indicating value is saved) to store the setting for that Power Level
STEP 13
Repeat steps 10 - 12 for the remaining desired power levels
NOTE:
For optimum performance it is best to program the desired power level range, as
shown above. Then to make small temporary power level changes, use the
RAISE or LOWER buttons (as long as ENTER is not pressed and held at this
time, this level will only be temporary - once another power level is selected this
power level will revert to its stored preset value).
3.3.3.4
Metering
Pressing METER takes you to a level of menus designed to quickly determine common
operating variables.
NOTE:
All meter readings are +/- 5%.
•
•
•
FWD PWR: Forward power in Watts
•
•
•
•
DC VOLT: B+ voltage
RFLD PWR: Reflected power in Watts
VSWR: Current voltage standing wave ratio (Example: 1.17 indicates a 1.17:1
VSWR ratio)
DC CURR: B+ current in Amps
+12V, -12V: 12 volt power supplies voltage
+48V: +48 volt power supply voltage
To view these screens (sample shown below) simply press METER:
Figure 3-7 Sample of METER Status
3.3.3.5
Status Screens via INFO Button
For less routine information, a set of "Status" menus is available via the INFO menu.
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Section 3 Operation
•
•
•
•
DAX-1/DAX-3
Frequency: RF Carrier frequency
EXC HW: Exciter/Controller board hardware version
EXTIO HW: External I/O board hardware version
SW REV: Control software version
The following steps will take you to the above listed statuses:
STEP 1
Pressing the INFO button takes you to submenu screen
STEP 2
Select STATUS SUBMENU using the UP or DOWN buttons
STEP 3
Press ENTER to bring up below screen
Figure 3-8 Status Screen
3.3.4
Digital Mode Selection
Use the following procedure to navigate to the Setup screen to edit your IBOC mode
selection:
STEP 1
Pressing the INFO button takes you to submenu screen
STEP 2
Select SETUP SUBMENU using the UP or DOWN buttons
STEP 3
Press ENTER to bring up below screen
Figure 3-9 Setup Screen
3-8
STEP 4
Use the UP and DOWN to select DIGITAL MODE
STEP 5
Once selected, use the ENTER button to toggle the Digital mode on or
off according to your system
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Section 3 Operation
DAX-1/DAX-3
3.4
Emergency Operation
In the unlikely event of a DAX transmitter malfunction, the Front Panel indications,
GUI screen, individual board indications, and VT100 protocol should quickly assist the
technician in determining a probable cause.
Depending on the Front Panel indications, early steps in troubleshooting a DAX
transmitter failure can be based on one or more of the following:
3.4.1
No Front Panel LEDs or GUI
1. Reset CB1
2. Check AC Mains
3.4.2
FAULT LED Illuminated
If the Fault LED is illuminated, this is an indication of a currently active fault.
1. If FAULT LED is lit continuously, proceed to following section
2. To clear the Fault Log, see STEP 5 of the following procedure
3.4.2.1
Viewing the Fault Log
NOTE:
Detailed fault descriptions, explanations and troubleshooting tips can be found in
Section 6 starting at "6.4 Fault Log Listing" on page 6-27.
The DAX controller stores 75 fault listings and operates with the first in first out (FIFO)
of data overflow. In other words, the fault log will only contain the last 75 faults. It is
highly unlikely that there would ever be 75 faults to be listed, but it is possible if the
fault log had not been reset for a very long period and/or there was many nuisance fault
trips, that the early faults would be ’pushed out’ by the more recent faults - never
totalling more than 75.
NOTE:
Most recent fault will be displayed as the topmost listing. TIME shown is elapsed
time since the fault occurred. This will be accurate unless there has since been an
AC power failure.
5/2/2013
STEP 1
Pressing the INFO button takes you to submenu screen
STEP 2
Select FAULT SUBMENU using the UP or DOWN buttons
STEP 3
Press ENTER to bring up a screen similar to below
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Section 3 Operation
DAX-1/DAX-3
Figure 3-10 Fault Log Screen
STEP 4
If more than three faults are present (" more" or "more " will be
seen on bottom line of GUI), they can be viewed by scrolling using the
UP or DOWN buttons
STEP 5
To clear the Fault Log, from this screen, press and hold the ENTER
button for >2 seconds
3.4.3
GUI Screen or Front Panel Buttons Unresponsive
If the DAX transmitter or GUI screen appears to not be responding to button pushes it is
possible the controller has had a glitch, and needs to be reset. The following steps may
be taken to return control to the control panel.
NOTE:
If the 1st step is unsuccessful, then proceed to the next step until control is
restored.
• Press and hold the ON button for greater than 2 seconds
• Remove the front panel and press Reset switch S5 on the Exciter/Controller board
• Turn off CB1, then turn back on
3.4.4
Foldback
A Foldback routine lowers the RF Power output in attempt to reduce VSWR.
If 3 VSWR hits occur within a 5 second period the internal foldback mode will be
initiated. When initiated the foldback routine will be foldback the power output 10%.
From this point, the same conditions (3 trips/ 5 seconds) will cause the output power to
be progressively folded back in 10% decrements. Once 20% of TPO is reached,
continuing foldback conditions will cause the transmitter to be faulted off.
While foldback is in progress, and if no additional VSWR foldback hits occur within a 4
minute period, the exciter will begin raising power back up through the same levels.
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Section 3 Operation
DAX-1/DAX-3
NOTE:
During this active foldback state any ON or RAISE/LOWER command, or a fault
reset will clear any foldback condition and the previous power output level will
be restored. However, if high a VSWR situation continues, the foldback routine
will repeat. If this is the case, the cause of the VSWR should be corrected before
continuing normal DAX operation.
3.4.5
DAX-1R PA Module Select - Optional
The DAX-1R redundant module option allows for automatic or manual module
switching. In the event of a failure of module A (bottom slot), the transmitter control
will switch to Module B (middle slot). The top slot is occupied by the Relay Module.
The operator can also manually switch to either PA as desired using the following
procedure.
3.4.5.1
Manual Selection of Redundant PA Module
STEP 1
Pressing the INFO button takes you to submenu screen
STEP 2
Select SETUP SUBMENU using the UP or DOWN buttons
STEP 3
Press ENTER to bring up a screen similar to below
Figure 3-11 PA Select Screen
NOTE:
The PA module change will not take place until transmitter is restarted (press ON
button).
5/2/2013
STEP 4
With the PRIMARY PA: line highlighted, press ENTER
STEP 5
Using the UP or DOWN buttons select PA 1 (bottom slot PA), or PA 2
(middle slot)
STEP 6
Press enter to store the selection
STEP 7
Reset DAX transmitter by pressing ON button
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3-11
Section 3 Operation
3.5
DAX-1/DAX-3
Common Settings Via VT100
The following screens describe the Operator-specific pages of the VT100 interface.
3.5.1
VT100 Setup
For all meter readings and programming including and beyond the front panel abilities,
the VT100 is the emulation method used to interface a computer with the DAX
transmitter. Any parameter accessible on the front panel GUI can also be viewed
and modified via VT100. By using a PC and terminal application of your choice (such
as Hyper Terminal) connected to the COM 2 port (J16) on the External I/O board with
a serial cable with DB-9 connector, you’ll have access to the VT100 screens.
This section outlines the steps necessary to physically connect, start the terminal
program, electronically handshake with, navigate the VT100 screens, and perform
edits.
STEP 1
Turn transmitter off
STEP 2
Connect RS-232 comm port 2 (J16) on External I/O board to your PC
STEP 3
Turn transmitter on
STEP 4
Start terminal program (such as HyperTerminal) with following settings
• Bits Per Second = 57600
• Data Bits = 8
• Parity = None
• Stop Bits = 1
• Flow Control = None
• Emulation = VT100
STEP 5
Call, or hit "Enter" twice to initiate handshake
To navigate around the VT100 Screens:
• Left/Right arrows to page back/forward
• Up/Down arrows to move cursor within page
To edit a numerical entry:
3-12
STEP 1
Type the line number or letter in parenthesis - do NOT hit "Enter"
STEP 2
Use up/down arrow keys to increase/decrease numerical value
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Section 3 Operation
DAX-1/DAX-3
STEP 3
Press the "Enter" key to store that entry
• EXAMPLE: To change the Forward Power Range of Power Level 4 to
2800W; on page 2 of the VT100 screens, type "4", then use your keyboard’s up or down arrow keys to reach 2800. Then hit "Enter" on your
keyboard to store.
To toggle (turn on/off) a command:
STEP 1
Type the corresponding number or letter in parenthesis - do NOT hit
"Enter"
• EXAMPLE: To mute the DAX; on page 2 of the VT100 screens, type
the letter "e". Type "e" again to unmute the transmitter.
STEP 2
3.5.2
Type the same number or letter again to toggle that command
VT100 - Page 1
Figure 3-12
VT100 Page 1 View
3.5.2.1
SYSTEM
Forward Power: Transmitter output power measured using an RF detector on the
Output Monitor board. Forward power is limited to 115% of rated power.
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Section 3 Operation
DAX-1/DAX-3
Reflected Pwr: Reflected power to the transmitter measured using a detector on the
Output Monitor board. Instantaneous reflected trip point is factory set to 100W per PA
module.
VSWR: Voltage standing wave ratio. Example: 1.009 reading indicates 1.009:1 ratio.
DC Voltage: High voltage power supply (B+) voltage measured via B+ Sample board.
Voltage range is 100V – 300V and varies with power level setting.
DC Current: High voltage power supply DC current measured using the shunt in the
HVPS. No calibration required. Nominal DC current is approximately 4.5A per kW
with program modulation.
AC Voltage: High voltage power supply transformer SECONDARY AC voltage
measured on Power Supply Controller board. Nominal secondary voltage for DAX-5 &
DAX-6 is 260Vrms for 3 phase, 265Vrms for single phase.
Nominal secondary for DAX-1 & DAX-3 is 240Vrms. Trip points are set to +13%/18%.
Frequency: Transmitter Carrier frequency.
Digital On/Off: Indication of audio input mode. If ON: DIGITAL AM MAG and
DIGITAL PHASE INPUTs are being used as source of audio and carrier. When OFF:
ANLG AUDIO input and either internal or external RF Carrier are being used as source
of audio and carrier.
Remote Enable: Indicates either ON: Remote enabled, or OFF: Remote disabled.
ePDM Frequency: Indicates the PDM frequency utilized in the transmitter. This
frequency is dependent on carrier frequency with the range being 150kHz – 200kHz.
10MHz Int/Ext: INT: Indicates that either the internal +/- 2 PPM 10MHz oscillator is
used as the frequency reference. EXT: Indicates that an externally supplied 10MHz
reference oscillator is being used via the 10MHz INPUT.
Filter Band: Indicates whether Band A, B, or C filter board is installed on the Exciter/
Controller. The frequency bands are set:
•
•
•
Band A – 529kHz – 759kHz
Band B – 760kHz – 1109kHz
Band C – 1110kHz – 1705kHz
Exciter/IO Rev: Indicates the board revisions for the Exciter/Controller board /
External I/O board.
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Section 3 Operation
DAX-1/DAX-3
SW Rev: Indicates the present software revision installed in the transmitter Exciter/
Controller board.
Fan 1, 2, 3, 4: Indicates the actual fan speed of the transmitter cooling fans. Normal
operation is approximately 100Hz. Fault occurs below 80 Hz.
3.5.2.2
CURRENT STATUS
PA 1 - 6: Indication of PA module status. Possible indications are: NA (Not Available)
indicating PA module not installed, OK indicating no faults present on PA module, or
FAULT.
Exciter: Indication of Exciter/Controller board status. Status can be OK or FAULT.
EXT IO: Indication of External I/O board status. Status can be OK or FAULT.
Foldback: ON: Indicates the transmitter has lowered output power due to high
reflected power (VSWR) in the transmitter. OFF: Normal operation.
Mute: When MUTE is displayed, indicates the output power of the transmitter has been
muted. OK indicates normal operation.
Interlock: When INTLK is displayed, indicates either an internal PA interlock, output
monitor interlock, or external interlock is present. OK indicates normal operation.
Tail Biter: Tail Biter is an optional distortion reduction technique utilized in the
transmitter. When ON, indicates this option is installed. Status is ON or OFF.
Ideal Range: The HVPS in the transmitter is varied to optimize the dynamic range of
the enhanced PDM circuitry. When the DAX is operating in this optimum dynamic
range, a YES indication is displayed.
If NO is displayed, reset the power level via the procedure outlined in section "3.3.3.3
To Set Desired RF Power Output Level" on page 3-5.
Time: The total-time meter of the transmitter is shown in hours:minutes:seconds in this
display. The time presented indicates the time that the transmitter is powered (AC mains
energized and CB1 turned on), NOT transmitter ON time.
Security Key: NA indicates the optional Security Key is not installed on the PA
Motherboard. When installed, the Security Key enables advanced correction, digital
mode operation, and distortion reduction techniques in the transmitter. Display is NA or
OK.
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3-15
Section 3 Operation
3.5.2.3
DAX-1/DAX-3
METERS
Exhaust Temp: Temperature measured on the Output Monitor board. Temperature
Fault (OM TEMP) occurs at 62º C.
V+ DTG: Dead Time Generator adjustment voltage measured on the Exciter/
Controller. This voltage directly corresponds to the transmitter carrier frequency
setting. Scaling is 1V per 100kHz.
V+ ePDM: Enhanced PDM adjustment voltage measured on the Exciter/Controller.
This voltage directly corresponds to the ePDM frequency. V+ePDM = (FePDM –
150kHz)*(2/50kHz) + 6
+48: DC voltage used to drive the PA chopper FETs, Exciter/Controller DTG, Output
Monitor circuitry, and cooling fans. Monitoring of fault condition is set at +/-10%.
+12: DC control voltage used for the PA modules, External I/O, Exciter/Controller, and
Output Monitor circuitry. Monitoring of fault condition is set at +/-10%.
-12: DC control voltage used for the PA modules, External I/O, Exciter/Controller, and
Output Monitor circuitry. Monitoring of fault condition is set at +/-10%.
+5: DC logic voltage used for the External I/O, and Exciter/Controller boards.
Monitoring of fault condition is set at +/-10%.
-5: DC voltage used for the Exciter/Controller board. Monitoring of fault condition is
set at +/-10%.
+3.3: DC logic voltage used for the External I/O, and Exciter/Controller boards.
Monitoring of fault condition is set at +/-10%.
+1.8: DC logic voltage used for the External I/O, and Exciter/Controller boards.
Monitoring of fault condition is set at +/-10%.
RFLD PWR Trip: Reflected power trip adjustment voltage set on the Exciter/
Controller. When set up correctly, this voltage corresponds to a reflected power trip of
100W (peak) per PA.
3-16
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Section 3 Operation
DAX-1/DAX-3
3.5.3
VT100 - Page 2
Figure 3-13
VT100 Page 2 View
3.5.3.1
Remote Control
NOTE:
All remote functions with the exception of (B) Off and (E) Mute are ignored
when the transmitter user interface Remote Enable is OFF.
(A) On: Pressing ‘A’ will turn the transmitter ON.
(B) Off: Pressing ‘B’ will turn the transmitter OFF.
(C) Raise: Pressing ‘C’ will raise the output power of the transmitter.
(D) Lower: Pressing ‘D’ will lower the output power of the transmitter.
(E) Mute: Pressing ‘E’ will mute the transmitter.
(F) Toggle Audio Mode: Pressing ‘F’ will change the audio input mode selection from
ANALOG to DIGITAL and vise versa.
(G) Fault Reset: Pressing ‘G’ will reset any faults present in the transmitter.
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Section 3 Operation
DAX-1/DAX-3
(H) Primary PA (DAX-1R only): Allows switching of on-air PA module. ‘A’ selects
bottom PA as primary, ‘B’ selects top PA as primary.
NOTE:
The actual switching of PAs does not take place until the DAX transmitter is
restarted, which can simply be pushing the ON button while the transmitter is
running.
3.5.3.2
Power Settings
(1) Level 1: Pressing ‘1’ changes the transmitter power setting to Level 1.
(2) Level 2: Pressing ‘2’ changes the transmitter power setting to Level 2.
(3) Level 3: Pressing ‘3’ changes the transmitter power setting to Level 3.
(4) Level 4: Pressing ‘4’ changes the transmitter power setting to Level 4.
(5) Level 5: Pressing ‘5’ changes the transmitter power setting to Level 5.
NOTE:
To set the Power Level range see "6.2.2.4 VT100 - Page 4" on page 6-12
3.5.3.3
Status
On/Off: Indicates status of transmitter for remote. Display is either ON or OFF.
Forward Power: Indicates transmitter output power.
Reflected Pwr: Indicates transmitter reflected power.
Mute: When ACTIVE is displayed, indicates the output power of the transmitter has
been muted. INACTIVE indicates normal operation.
Fault: When ACTIVE, indicates a fault present on the transmitter.
Foldback: When ACTIVE, indicates the transmitter has lowered output power due to
high reflected power. INACTIVE is normal operation.
Interlock: When ACTIVE, indicates either a PA interlock or external interlock
condition is present. INACTIVE is normal operation.
Power Level: Indicates the Power Level selected. Displays 1, 2, 3, 4, or 5.
3-18
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Section 3 Operation
DAX-1/DAX-3
3.5.4
VT100 - Page 3
Figure 3-14
VT100 Page 3 View - Fault Log
NOTE:
See "6.4 Fault Log Listing" on page 6-27 to view the complete listing of possible
DAX transmitter faults. This table also includes a description of each fault and an
explanation of the transmitter’s response to the fault.
INDEX – Up to 75 faults can be logged into the circular fault log. When 75 has been
reached the oldest fault will be discarded when a new fault occurs.
TYPE – Indicates the name of the fault logged.
STATUS – Indicates whether the fault is still present (ACTIVE), or is no longer present
(INACTIVE).
OCCUR TIME – Logs when the fault occurred relative to the present time. Example:
If the occur time is 0002:10:00 the fault occurred 2 hours and 10 minutes ago.
CLEAR TIME - Logs when the fault cleared relative to the present time. Ex. If the
clear time is 0002:01:00 the fault occurred 2 hours and 1 minutes ago.
Note that pressing ‘R’ resets the fault log. Pressing UP/DOWN arrow keys scroll thru
the fault log.
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3-19
Section 3 Operation
3-20
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DAX-1/DAX-3
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DAX-1/DAX-3
Section 4
Theory of
Operation
4.1
4
Introduction
This section provides block diagram level theory to assist the technician in
understanding and troubleshooting the transmitter.
System level, subsystems, and assemblies all fall under the following headings:
•
•
•
4.2
Control
RF
Power Supply
Control
4.2.1
Exciter/Controller
The Exciter/Controller board performs the following functions:
4.2.1.1
DSP
The DSP for the Exciter performs the supervisory, and adaptive correction algorithms.
Upon reset or power up of a factory configured board, the DSP boots from memory,
verifies configuration, configures the FPGA, initializes configuration registers in the
FPGA.
4.2.1.2
Synthesizer
The synthesizer in the exciter is uses a Numerically Controlled Oscillator (NCO) to
develop the carrier frequency in the absence of an external carrier input. Either an
internal 10MHz precision oscillator or an external 10MHz input can be used as the
reference and the internal/external clock reference is software selectable.
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4-1
Section 4 Theory of Operation
4.2.1.3
DAX-1/DAX-3
Field Programmable Gate Array (FPGA)
The Field Programmable Gate Array FPGA on the Exciter will perform all the real time
processing of the input serial data, all correction functions, control the turn on/off of the
PA modules, provide status information to the DSP, and distribute the Audio and PDM
clock to the PDM drive circuitry.
4.2.1.4
Audio Input Data Analog/IBOC
Input audio data is received from the external interface board with an input level of +/10Vdc maximum, and is selectable between analog and IBOC paths as well as AC or
DC coupling. The audio data is filtered, scaled, converted to digital, and input to the
FPGA for processing. Scaling of the audio is performed with an adjustable pot,
controlling the gain of the input, with a gain range of 0 to +2Vdc maximum at the input
to the A/D.
Figure 4-1
Audio Flow Block Diagram
4.2.1.5
Analog Power Supply Sense Input
To compensate for amplitude fluctuations due to power supply variation, the 300Vdc
power supply is sensed and used as an amplitude scale factor.
4-2
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Section 4 Theory of Operation
DAX-1/DAX-3
4.2.1.6
Frequency Dependent Filter Board
A single printed circuit board is comprised of 3 separate filters of the same frequency
band. The NCO output filter, RF carrier input filter, and RF sample input filter will
provide the necessary frequency dependent protection.
4.2.2
External I/O
The External I/O board provides the primary interface between the transmitter and the
customer via the remote parallel interface and the front panel, and also provides several
key technical features to the system. The primary mode of system communication will
be through a serial bus to the Exciter/Controller.
4.2.2.1
Audio Inputs
The analog and IBOC audio are multiplexed through a DPST relay, which is controlled
through the IBOC/AN_SEL signal. After the audio is multiplexed it is sent through a
low pass filter with a jumper selected cutoff frequency of 10kH, 9kHz, 4.5kHz, or
50kHz (see Table 2-3 on page 2-21 for configuration jumper settings).
4.2.2.2
Modulation Monitor
An output sample is sent to the External I/O from the Output Monitor. This sample is
level adjusted for each Power Level and available at J4 BNC connector (minimum
impedance = 500 Ohms).
4.2.2.3
RS232 Interface
There are two RS232 ports on the External I/O, and both transmit and receive lines are
controlled through the Exciter/Controller.
4.2.2.4
Low Voltage Power Supplies
Control voltages for the system are sent from the power supplies to the External I/O
through a 15 pin D sub-connector. These control voltages are filtered and then
distributed to the Exciter/Controller and the Output Monitor.
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4-3
Section 4 Theory of Operation
4.3
DAX-1/DAX-3
RF
The DAX is an advanced PDM (APDM) transmitter, utilizing enhancements of
technology to minimize legacy PDM limitations while maximizing its strengths.
The following drawing shows the RF flow for the DAX transmitter:
Figure 4-2
DAX RF Flow Block Diagram
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Section 4 Theory of Operation
DAX-1/DAX-3
4.3.1
PA Module
4.3.1.1
General Information
Carrier frequency :
529kHz to 1705kHz
PA output carrier power : 1000W + 15% max.
Maximum output power : 1150W peak DAX-1/DAX-1R
3450W peak DAX-3
Modulator switching frequency is 150kHz to 200kHz (synchronous with the carrier
frequency).
Figure 4-3 PA Module Block Diagram
4.3.2
Motherboard
The DAX transmitter motherboards are the backplane for the PA modules to transfer the
PA output to the RF output via series combining.
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4-5
Section 4 Theory of Operation
4.4
DAX-1/DAX-3
Power Supply System
The power supply system provides all DC power for the transmitter. The DC power for
the RF power amplifiers (B+) is provided in two controller-selected DC voltage levels:
200Vdc, and 300Vdc. The RF power amplifiers will only be powered from one of these
selectable voltage levels at a time. The transmitter’s control system will select which
DC power level is used to power the RF amplifiers. Depending on the transmitter output
power setting, the control system will adjust the 200Vdc supply between 80Vdc and
200Vdc in order to optimize the transmitter’s RF performance at lower power levels.
The power supply system also provides the following fixed low voltage supplies:
+48Vdc, +12Vdc and -12Vdc.
Figure 4-4 Power Supply System Block Diagram
4.4.1
RF PA Power Supply (B+)
The RF PA power supply (also referred to as the B+ supply) provides power to the
power amplifier circuitry. The operation of the B+ supply is outlined below.
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Section 4 Theory of Operation
DAX-1/DAX-3
4.4.1.1
AC Mains Input and Transformer Primary
The AC input of the B+ power supply is configured to be powered from 220, 230, or
240VAC. Three taps on the primary of the input transformer allow the selection of the
correct AC mains voltage input. +/-5% taps are provided on the transformers AC input
in order to accommodate installations with low or high AC line voltages.
4.4.1.2
AC Mains Input Protection
The AC mains input for the DAX-1 is protected from over-current by an 15A circuit
breaker, and the DAX-3 by a 30A circuit breaker. This circuit breaker also acts as the
transmitter’s AC mains ON/OFF switch. The AC mains input of the transmitter is also
protected from voltage surges and spikes by MOVs connected between line to neutral,
line to ground, and from neutral to ground.
4.4.1.3
Transformer Secondary
The secondary of the AC input transformer has two Controller-selected taps, allowing
the power supply to provide two DC voltage outputs. The two DC output voltages
provided are +200V, and +300V.
NOTE:
Depending on the transmitter output power setting, the control system will adjust
this 200Vdc supply between 200Vdc and 80Vdc in order to optimize the transmitter’s RF performance at lower power levels.
A 40A SPDT relay is used to connect the appropriate secondary tap to the full-wave
SCR bridge rectifier, with only one secondary tap selected at a time. This relay is
actuated via a MOSFET controlled by the FPGA main controller.
4.4.1.4
SCR Rectifier
The selected transformer secondary tap feeds a full-wave bridge rectifier, which
contains two SCRs, two rectifier diodes, and one free-wheeling diode. The freewheeling diode provides an electrical path for inductive turn-off currents.
SCR firing control, voltage regulation, and B+ power supply enable/disable functions
are provided by a vendor supplied PCB. The ENERPRO SCR firing board used in this
design is the FCRO2100, which also provides the voltage regulation function.
4.4.1.5
Output Voltage Regulation
The output voltage of the B+ supply is regulated by continuously adjusting the
conduction angle of the SCRs in the bridge rectifier. If the DC output voltage sags, the
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Section 4 Theory of Operation
DAX-1/DAX-3
conduction angle of the SCRs is increased, raising the DC output voltage. If the DC
output voltage increases, the conduction angle of the SCRs decreases, lowering the DC
output voltage.
Two DC bus voltages are provided by the Power Supply Controller selecting between
two sets of transformer secondary taps; these two taps provide the 300V and 200V
(variable between 80Vdc and 200Vdc for low power optimization) DC bus voltages.
The voltage regulation function is made possible by voltage feedback from the DC
output of the B+ supply. The DC voltage feedback is provided by a resistive voltage
divider, which is changed whenever a different secondary voltage tap is selected. When
a different B+ voltage is selected, the multiplexer connects the appropriate voltage
divider resistors to the DC output and the correct voltage regulation feedback voltage is
sent to the ENERPRO SCR firing board.
4.4.1.5.1 B+ Supply Enable/Disable Functions
The B+ supply is enabled and disabled via a single logic line from the main controller.
When the B+ supply is enabled the SCRs begin firing at their minimum conduction
angle and progressively fire at greater and greater conduction angles until DC output
voltage regulation is achieved; this provides a “soft-start” turn-on characteristic for the
B+ supply. When the B+ supply is disabled the SCRs are instantly disabled; this
provides the desired “soft-start/instant disable” characteristic for the B+ supply.
4.4.1.6
DC Output Filtering
The rectified AC is filtered with an L-C network in order to provide a low ripple DC
output.
4.4.2
Power Supply Controller
The Power Supply Controller Board provides the interface and control functionality for
the transmitter’s power supply. The Controller Board provides the following functions:
4-8
•
•
Receives the power supply logic control signals from the Main Controller
•
•
Provides feedback to the Main Controller on power supply faults
•
Provides fuse protection for the rectifiers and DC output components
Provides the interface between the Main Controller, transformer, SCR firing board,
and rectifier assembly
Provides transformer secondary voltage and DC output current samples to the Main
Controller
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DAX-1/DAX-3
•
Provides over-current protection for the low voltage power supplies (+/-12Vdc,
5Vdc, & +48Vdc)
•
•
•
Provides power for the cooling fans
Provides DC bus output voltage regulation
Provides the DC bus discharge function
Figure 4-5 Single Phase Power Supply Controller Block Diagram
4.4.2.1
Main Controller Interface
The Power Supply Controller board serves as the control interface between the
transmitters Main Controller and the DC power supply. The circuitry on the Power
Supply Controller Board allows the Main Controller to adjust the DC bus voltage and
provides the Main Controller with power supply fault and over-temperature status
information, a transformer secondary AC voltage sample, and a DC bus current sample.
The power supply is enabled and disabled via commands from the Main Controller.
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Section 4 Theory of Operation
4.4.2.2
DAX-1/DAX-3
SCR Firing Board Interface
The Power Supply Controller board interfaces with the SCR firing board and provides
the SCR enable / disable function and voltage references, which determine the
conduction angle of the rectifiers and thus the regulated DC bus voltage. A sample of
the B+ output is sent to the SCR firing board from the Power Supply Controller to close
the voltage regulation loop.
4.4.2.3
Power Supply Fault Status Reporting
The Power Supply Controller board reports AC phase loss, DC discharge fuse failure,
transformer over-temperature, and rectifier assembly over-temperature faults to the
Main Controller. Rectifier and transformer over-temperature faults, and AC phase loss
faults are reported to the Main Controller as a PS_FAULT, and DC discharge fuse
failure is reported to the Main Controller as PS_WARNING.
4.4.2.4
Samples to the Main Controller
DC current and AC voltage samples are provided for the DAX Main Controller.
4.4.2.4.1 DC Current Sample
A sample of the power supplies DC output current is taken across a current shunt
resistor, which is connected between the negative side of the rectifier assembly and
chassis ground. The voltage that is sensed across this resistor is fed into the input of an
op-amp and the output voltage scaling of the current sample is adjusted by adjusting the
gain of the op-amp. The current sample scaling is 0.09Vdc output / 1A DC input. This
current sample is sent to the Main Controller.
4.4.2.4.2 Transformer Secondary Voltage Sample
A sample of the transformers secondary voltage is provided so the Main Controller can
determine whether the AC mains is within +10/-15% of the nominal AC line voltage.
4.4.2.5
Over Current Protection
4.4.2.5.1 Rectifier and DC Output
The rectifier assembly and the DC output wiring and components of the B+ supply are
protected from over-current by properly sizing the transformer secondary fusing such
that DC over-currents will blow the secondary fusing before rectifier or DC output
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Section 4 Theory of Operation
DAX-1/DAX-3
components are damaged. Semiconductor fuses are employed to provide this protection
function.
4.4.2.5.2 Low Voltage Power Supply
The transmitter power supply system includes low voltage switching power supplies,
which provide power for the transmitters control circuitry, fans, and Binary PA’s. There
are two low voltage power supplies in the system, which provide three DC output
voltages: +/-12Vdc and +48Vdc. The table below shows the current requirements for
the low voltage power supplies.
Table 4-1
Low Voltage Power Supplies’ Current Requirements
Output Voltage
Current Load
Over-Current
Protection
+12Vdc
6A
15A Slow Blow Fuse
-12Vdc
1.1A
2.5A PTC
+48Vdc
2A
7A Slow Blow Fuse
The DC output voltages in the table above are fed from the switching power supplies to
the Power Supply Controller Board, where over-current protection is provided for each
DC output. The low voltage power supply voltages are then fed to the rest of the
transmitter system.
4.4.2.6
DC Discharge Circuit
A DC discharge circuit is used in the power supply in order to discharge the DC bus
voltage to a safe level when the power supply receives the “off” command from the
main controller. When the power supply receives the command to turn off or switch
secondary taps a FET switch connects a bleeder resistor to the DC bus, discharging the
DC voltage to approximately 40.5V in 2 seconds.
4.4.2.7
Power Supply System I/O
The power supply system is controlled and monitored via an I/O Data Buss. AC and DC
power I/O will be referred to as being on the Power Buss.
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Section 4 Theory of Operation
4-12
DAX-1/DAX-3
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Section 5
Maintenance and
Alignments
5.1
5
Introduction
This section provides maintenance and alignment information for the DAX transmitter.
It is intended to be used by qualified technical service personnel only.
!
CAUTION:
DO NOT ATTEMPT TO REMOVE OR REPLACE ANY COMPONENTS OR
BOARDS WITH POWER APPLIED TO THE TRANSMITTER.
5.2
Routine Maintenance
Routine maintenance of the DAX transmitter basically consists of inspection, regular
cleaning, and monitoring of metrics such as currents, voltages and faults.
5.2.1
Record Keeping
The importance of keeping station performance records cannot be over-emphasized.
Logbooks should be maintained for all operation and maintenance activities. These
records can provide data for predicting potential problem areas and analyzing
equipment malfunctions.
5.2.1.1
Transmitter Logbook
As a minimum performance characteristic, the transmitter should be monitored (using
front panel GUI and VT100) and the results recorded in the transmitter logbook at least
once a day.
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5-1
Section 5 Maintenance and Alignments
5.2.1.2
DAX-1/DAX-3
Maintenance Logbook
The maintenance logbook should contain a complete description of all maintenance
activities required to keep the transmitter operational. A list of maintenance information
to be recorded and analyzed to provide a database for a failure reporting system is as
follows:
DISCREPANCY
Describe the nature of the malfunction. Include all observable symptoms and
performance characteristics.
CORRECTIVE ACTION
Describe the repair procedure used to correct the malfunction.
DEFECTIVE PART(S)
List all parts and components replaced or repaired. Include the following details:
a. COMPONENT TIME IN USE
b. COMPONENT PART NUMBER
c. COMPONENT SCHEMATIC NUMBER
d. COMPONENT ASSEMBLY NUMBER
e. COMPONENT REFERENCE DESIGNATOR
SYSTEM ELAPSED TIME
Total transmitter time on.
NAME OF REPAIRMAN
Person who actually made the repair.
STATION ENGINEER
Indicates chief engineer noted and approved the transmitter repair.
5.2.2
Cleaning
Proper airflow is essential in keeping the transmitter in top working condition. If
outside air is brought into the building it should be well filtered to keep dirt out of the
building and the transmitter.
5.2.2.1
Cleaning the Air Filter
It is recommended to clean or replace the air filter once a year, or more often if required.
5-2
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Section 5 Maintenance and Alignments
DAX-1/DAX-3
Pry Slot
Removable
Media
(Part #
448-1231-000)
Figure 5-1
DAX-1/DAX-3 Air Filter
5/2/2013
STEP 1
Pry open the filter frame to expose the media
STEP 2
Remove media
STEP 3
Wash and dry, or replace media as necessary
STEP 4
Place clean media into fan frame chassis
STEP 5
Press fan frame back into place
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Section 5 Maintenance and Alignments
5.3
DAX-1/DAX-3
Configuration
5.3.1
Change Remote Disable LED Color
Depending on the installation requirements, the color of the Remote Disable LED can
be altered from the default.
STEP 1
Locate the External I/O board by removing the front panel below the
control panel
STEP 2
Locate JP1 and set accordingly
• Green at disabled remote: 1-2
• Red at disabled remote: 2-3
STEP 3
5.3.2
Replace front panel
Bessel Filter Input Bandwidth Select
See the following table to configure the S2, S3, and S4 switches to match the desired
input filter bandwidth.
For digital operation be sure S2, S3, and S4 switches, located on the Exciter/Controller
board, all have the #1 switch in the up position, and the rest down. This is for full 50
kHz bandwidth operation required for domestic IBOC broadcast. Narrow-mode AM
utilized in countries other than the USA will find the other filter settings useful to match
their system.
NOTE:
In Table 5-1 below, the number indicates the only switch to be in the UP position.
The other 3 positions on each switch will all be in the DOWN position.
Table 5-1
Bessel Filter Bandwidth Switch Settings
Desired Bandwidth
S2
S3
S4
50 kHz
1
1
1
10 kHz
2
2
2
9 kHz
3
3
3
5 kHz
4
4
4
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Section 5 Maintenance and Alignments
DAX-1/DAX-3
5.3.3
Power Limit Setup
The DAX transmitter can be remotely forced to a predetermined power level via the
Remote Power Limit Select I/O line, J7-8 on the External I/O board. To set that value
use the following procedures.
5.3.3.1
Via Front Panel GUI
STEP 1
Press the INFO button to navigate to the submenu screen
STEP 2
Select SETUP SUBMENU using the UP or DOWN buttons
STEP 3
Press ENTER to bring up below screen
Figure 5-2 Setup Screen
NOTE: DAX-1R (Redundant PA option) Screen Shown
STEP 4
Scroll to POWER LIMIT and press ENTER
STEP 5
Adjust the level, in Watts, to the desired value using the UP or DOWN
buttons
STEP 6
Press ENTER to store that value
5.3.3.2
Via VT100
See "5.5.1 VT100 Calibrations and Alignments" on page 5-8 below, particularly the
note for accessing the page 4 VT100 configuration screen for the following procedure.
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STEP 1
Initiate VT100 programming and navigate to page 4
STEP 2
Type the letter "u" for Remote Power Limit
STEP 3
Use the keyboard’s up/down arrows to adjust the value in Watts to the
level required
STEP 4
Press "Enter" key to store value
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Section 5 Maintenance and Alignments
5.4
DAX-1/DAX-3
Software Upgrade Procedure
The following section outlines the steps necessary to update the DAX transmitter with a
different version of software than currently installed. As with the VT100 programming,
a PC and serial cable with DB-9 connector is required. The PC should have the Harris
Broadcast software update install CD inserted.
IMPORTANT NOTE:
The software update will automatically reset the transmitter during the procedure.
This will momentarily take the transmitter off the air. Therefore it is
recommended to perform this update with the transmitter OFF.
It is recommended to compare the current software revision with that about to be
installed to verify the version you are installing is not already loaded.
STEP 1
Verify software revision via the GUI:
• Pressing the INFO button takes you to submenu screen
• Select STATUS SUBMENU using the UP or DOWN buttons
• Press ENTER to bring up below screen
Figure 5-3 Status Screen
NOTE:
The software revision level is also available via the VT100 page 1 (see "6.2.2.1
VT100 - Page 1" on page 6-5).
5-6
STEP 2
Turn off transmitter
STEP 3
Connect serial cable from PC to COM 1 port (J17) on the External I/O
board
STEP 4
Find and run HarrisISP.exe on the install CD
STEP 5
Select the appropriate PC comm port connected in STEP 3
STEP 6
Select baud rate of 57600
STEP 7
Double click on the microcontroller [0] icon in the upper left corner of
screen
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STEP 8
Select program file
STEP 9
Using BROWSE, select application file DAX_APP_vvvr.S19 (where
"v" represents Version, and "r" represents Revision)
STEP 10
Click on PROGRAM button
STEP 11
If the dialog box shown below opens, click on YES
STEP 12
When file transfer is complete click on the OKAY button (may take up to
10 minutes)
STEP 13
The DAX will then reset
STEP 14
Verify correct software revision is now installed following the procedure
in STEP 1
STEP 15
Exit the Harris ISP application
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Section 5 Maintenance and Alignments
5.5
DAX-1/DAX-3
Alignments
5.5.1
VT100 Calibrations and Alignments
For all meter readings and programming including and beyond the front panel abilities,
the VT100 is the emulation method used to interface a computer with the DAX
transmitter. Any parameter accessible on the front panel GUI can also be viewed
and modified via VT100. By using a PC and terminal application of your choice (such
as Hyper Terminal) connected to the COM 2 port (J16) on the External I/O board with
a serial cable with DB-9 connector, you’ll have access to the VT100 screens.
This section outlines the steps necessary to physically connect, start the terminal
program, electronically handshake with, navigate the VT100 screens, and perform
edits.
STEP 1
Turn transmitter off
STEP 2
Connect RS-232 comm port 2 (J16) on External I/O board to your PC
STEP 3
Turn transmitter on
STEP 4
Start terminal program (such as Hyper Terminal) with following settings
• Bits Per Second = 57600
• Data Bits = 8
• Parity = None
• Stop Bits = 1
• Flow Control = None
• Emulation = VT100
STEP 5
Call, or hit "Enter" twice to initiate handshake
To navigate around the VT100 Screens:
• Left/Right arrows to page back/forward
• Up/Down arrows to move cursor within page
To edit a numerical entry:
5-8
STEP 1
Type the line number or letter in parenthesis - do NOT hit "Enter"
STEP 2
Use up/down arrow keys to increase/decrease numerical value
(with the exception of the Meter Calibration section, where it is required
to type in the numerical value)
STEP 3
Press the "Enter" key to store that entry
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DAX-1/DAX-3
• EXAMPLE: To change the Forward Power Range of Power Level 4 to
2800W; on page 2 of the VT100 screens, type "4", then use your keyboard’s up or down arrow keys to reach 2800. Then hit "Enter" on your
keyboard to store.
To toggle (turn on/off) a command:
STEP 1
Type the corresponding number or letter in parenthesis - do NOT hit
"Enter"
• EXAMPLE: To mute the DAX; on page 2 of the VT100 screens, type
the letter "e". Type "e" again to unmute the transmitter.
STEP 2
Type the same number or letter again to toggle that command
To access Page 4 of the VT100 programming:
From page 3, press and hold your keyboard’s "Shift" key, then press "1", then press "2",
and then press "3". From that point on during this session, you will have access to this
page by using the left/right arrow keys to page through all four VT100 screens.
NOTE:
If you are using a non-English keyboard you may need to set the Keyboard Properties to English from Windows Control Panel: Keyboard for the above procedure to work.
To access page 5 of the VT100 programming:
From page 4, press and hold your keyboard’s "Ctrl" key, then press "z". From that point
on during this session, you will have access to this page by using the left/right arrow
keys to page through all five VT100 screens.
5.5.2
Forward & Reflected Power Calibrations
This procedure is provided in the event that the power metering of the DAX transmitter
needs to be recalibrated. Before starting this process, the DAX should be connected to a
PC with the terminal application running and VT100 Page 5 accessed as outlined in
section "5.5.1 VT100 Calibrations and Alignments" on page 5-8, above.
IMPORTANT:
The following procedures requires the DAX transmitter to be operated into a
known-good 50 Ohm test load, rated at or above the DAX nameplate power output.
NOTE:
An external RF current meter or Wattmeter is required for this procedure.
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Section 5 Maintenance and Alignments
5.5.2.1
DAX-1/DAX-3
Forward Power Setting
The goal here is null the reflected power circuit by using the dipswitches and
potentiometer on the Output Monitor board:
STEP 1
STEP 2
STEP 3
Turn on the transmitter and raise
power until the DC current reaches 5
Amps for DAX 5/6 (1 Amp for a
DAX 1/3) according to front panel
GUI meter
Clip a DC Voltmeter to TP1 on the
Output Monitor board (shown at
right) at the upper rear of the
transmitter and begin with the
dipswitches all set to the left
Try to locate a null point (a minimum
voltage) within the range of the pot
DIPSwitch (S1)
S1-4
S1-3
S1-2
S1-1: Test = Right
Potentiometer (R23)
LED (DS1):
Test = Red
Testpoint 1 (TP1)
NOTE:
If there is no null point (i.e. the lowest point is at the end of travel of the pot), flip
dipswitch S-2 (second up from the bottom) to the right, and try to locate the null
again. If there is still no null, flip dipswitch S-3. If there is still no null, flip dipswitch S-4. Once the null is located, center the potentiometer in it.
STEP 4
Set the transmitter to the highest power range setting (typically Power
Level 5), and zero the power setting by simultaneously holding the
RAISE and LOWER buttons for greater than 3 seconds
STEP 5
Using the front panel RAISE control, raise transmitter output power
back up until your external RF current or Watt meter indicates a value
that corresponds to the nameplate output power
Table 5-2
5-10
STEP 5 Nameplate Power Settings
Model
Watts
DAX-1/1R
1000
DAX-3
3000
DAX-5
5000
DAX-6
6000
STEP 6
On the VT100 page 5, press “3” and then type in the power in Watts,
from in STEP 5 above
STEP 7
Press <ENTER> to store the now-calibrated Forward Power Cal. setting
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5.5.2.2
Reflected Power Setting
The procedure continues below, now focusing on reflected power calibration and
VSWR protection setting:
STEP 8
Turn Reflected Power Trip potentiometer, R56 on the Exciter/Controller
board, fully clockwise (CW)
STEP 9
On the VT100 page 5, press “I” and raise the Reflected Power Trip to
800W (for all DAX transmitters) using the up arrow key
STEP 10
Using the front panel LOWER control, lower the transmitter power until
the GUI forward power meter indicates 100W per PA (see Table 5-3
below)
Table 5-3
STEP 10 Power Settings
Model
Watts
DAX-1/1R
100
DAX-3
300
DAX-5
500
DAX-6
600
STEP 11
Set the transmitter for Reflected Power Calibration mode by moving S11 on the Output Monitor board (bottom switch) to the right. The red
LED just below S1 will illuminate (If the transmitter trips off, verify that
the Reflected Power Trip in the VT100 is set to 800W, and that R56 on
the Exciter/Controller is turned fully CW).
STEP 12
On the VT100 page 5, enter the Reflected Power Cal. value by pressing
“5” and then typing the power, in Watts, set in STEP 10 above
STEP 13
Press <ENTER> to store the now-calibrated Reflected Power Cal.
setting
STEP 14
Set the Reflected Power Trip point using R56 on the Exciter/Controller
board:
• Rotate R56 CCW until the transmitter faults
• Back R56 CW ¼ turn until the transmitter no longer faults (you may
have to press the ON button again if the transmitter 3-strike faults OFF
during the adjustment)
STEP 15
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Return the Output Monitor to normal operating mode by switching S1-1
back to the left (red LED will turn off)
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Section 5 Maintenance and Alignments
STEP 16
DAX-1/DAX-3
On the VT100 page 5, press “I” and lower the Reflected Power Trip to
70W per PA using the down arrow key (see Table 5-4 below)
Table 5-4
STEP 16 Power Settings
Model
Watts
DAX-1/1R
70
DAX-3
210
DAX-5
350
DAX-6
420
STEP 17
Still on the VT100 page 5, press "4" and increase the Reflected Power
Null, using the up arrow, until the Reflected Power Cal. reading
indicates lowest value possible
STEP 18
Raise the transmitter power to nameplate output power. Verify the
transmitter DC Current metering is approximately 3.8A per PA with no
modulation, as reported on the GUI metering screen (see Table 5-5
below).
Table 5-5
5.5.2.3
STEP 18 DC Current Settings
Model
Watts
DC Amps
DAX-1/1R
1000
3.8
DAX-3
3000
11.4
DAX-5
5000
19.0
DAX-6
6000
22.8
Reset Power Levels:
This last portion of this procedure re-establishes the desired power levels using the
newly calibrated metering:
5-12
STEP 19
Go to the POWER screen on the transmitter GUI
STEP 20
Select Power Level 1 (see "3.3.3.2 Selecting Power Levels 1 - 5" on page
3-5 for details)
STEP 21
RAISE or LOWER the power to match the Power Level Range setting
(small numeric value at lower right side of display) for that Power Level
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DAX-1/DAX-3
STEP 22
Press and hold the ENTER button on the front panel until the LCD
screen reverse video appears to store the power setting for that Power
Level
STEP 23
Repeat for each additional power level
This concludes the Forward & Reflect Power Calibrations procedures.
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5-13
Section 5 Maintenance and Alignments
5.6
DAX-1/DAX-3
Parts Replacement
See Section 7, Replaceable Parts List, for part numbers available for replacement.
5.6.1
Power Supply Controller
The following procedure explains in detail the necessary steps to replace a Power
Supply Controller board. It is recommended that the technician read through these
instructions prior to proceeding with this replacement.
NOTE:
For servicing the Power Supply Controller board or associated PS components,
the Power Supply chassis can be slid rearward from the transmitter cabinet for
improved access. See "2.3.4.2 Transmitter AC Connection" on page 2-12 in Section 2 of this manual.
5-14
STEP 1
Turn off transmitter
STEP 2
Turn off AC power at CB1
STEP 3
Remove the old Power Supply Controller board
STEP 4
Install the new Power Supply Controller board
STEP 5
Connect a PC to the DAX and set up the VT100 emulation as outlined in
section "5.5.1 VT100 Calibrations and Alignments" on page 5-8 above
STEP 6
Turn on transmitter AC power at CB1
STEP 7
Connect an AC voltmeter to the test points labeled “XFMR
SECONDARY SAMPLE” (TP11 and TP12) on the Power Supply
Controller board and note reading
STEP 8
Call, or hit "Enter" twice to initiate handshake between DAX and PC
STEP 9
Use Left/Right arrow to go to sheet 5 (see "5.5.1 VT100 Calibrations and
Alignments" on page 5-8) of the VT100 screens
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Figure 5-4
VT100 Page 5 View
STEP 10
On sheet 5 of the VT100 screens hit the “1” key
STEP 11
Type in the AC voltage reading from the voltmeter and hit the “Enter”
key. The AC voltage is now calibrated.
STEP 12
Turn off transmitter AC power at the circuit breaker
STEP 13
Connect the positive lead of a DC voltmeter to the test point labeled “B+
SAMPLE” (TP20) on the Power Supply Controller Board
STEP 14
Connect the negative lead of the DC voltmeter to a test point labeled
“GND” on the Power Supply Controller Board
STEP 15
Turn on transmitter AC power at CB1
STEP 16
On page 5 of the VT100 screens press the "M" key
STEP 17
Use the down arrow key on the keyboard to lower the B+ DAC value
about 20 counts
STEP 18
Press the “Enter” key to store this temporary value
STEP 19
Press the "Q" key to disable B+ Fault reporting
STEP 20
Operate the transmitter at the following power level setting:
• DAX-1: 1kW
• DAX-3: 3kW
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Section 5 Maintenance and Alignments
DAX-1/DAX-3
• DAX-5: 5kW
• DAX-6: 6kW
STEP 21
On sheet 5 of the VT100 screens hit the “M” key
STEP 22
Use the up/down arrow keys on the keyboard to adjust the B+ DAC until
the DC voltage reading on the meter of the B+ supply is as close to
300.0V as possible
STEP 23
Press the “ENTER” key to store
STEP 24
Press the “2” key and type the number “300” and press the “Enter” key
STEP 25
With the transmitter still operating, set the transmitter to a power level
range that has been pre-set in the “level” menu to the following:
• DAX-1: 400W
• DAX-3: 1300W
• DAX-5: 2500W
• DAX-6: 2500W
NOTE:
(Verify that the number in the lower right-hand corner of the transmitter display
reads the number listed above).
STEP 26
While on page 5 of the VT100 screens, press the “N” key and the VT100
screen will display a “WAIT” message
STEP 27
If the “WAIT” message becomes “PASS” press the “Enter” key. If the
“WAIT” message becomes a “FAIL” message hit the “N” key again.
NOTE:
If this low-tap calibration fails more than once, there is a problem with the transmitter and a call to Harris Broadcast service may be required.
STEP 28
5.6.1.1
-12Vdc Adjustment
STEP 29
5-16
Press the "P" key to re-enable B+ Fault reporting
Press the METER button and then the up or down arrows to navigate to
the below screen
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Section 5 Maintenance and Alignments
DAX-1/DAX-3
Figure 5-5 Meter Screen
STEP 30
5.6.2
On the Power Supply Controller board, adjust R47 for a -12V (±5%)
reading on this screen
SCR Controller Board
The following procedure explains in detail the necessary steps to replace an SCR
Controller board. It is recommended that the technician read through these instructions
prior to proceeding with this replacement.
STEP 1
Turn off transmitter
STEP 2
Turn off AC power at CB1
STEP 3
Remove Enerpro SCR Controller board to be replaced
STEP 4
Install new SCR Controller board
STEP 5
Connect the positive lead of a DC voltmeter to the test point labeled “B+
SAMPLE” (TP20) on the Power Supply Controller board
STEP 6
Connect the negative lead of the DC voltmeter to a test point labeled
“GND” on the Power Supply Controller board
STEP 7
Connect a PC to the DAX and set up the VT100 emulation as outlined in
section "5.5.1 VT100 Calibrations and Alignments" on page 5-8 above
STEP 8
Turn on transmitter AC power at CB1
STEP 9
Call, or hit "Enter" twice to initiate handshake between DAX and PC
STEP 10
Use Left/Right arrow to go to sheet 5 of the VT100 screens
STEP 11
On page 5 (see "5.5.1 VT100 Calibrations and Alignments" on page 5-8)
of the VT100 screens hit the “M” key
STEP 12
Use the down arrow key on the keyboard to lower the B+ DAC value
about 20 counts
STEP 13
Press the “Enter” key to store this temporary value
STEP 14
Operate the transmitter at the following power level setting:
• DAX-1: 1kW
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Section 5 Maintenance and Alignments
DAX-1/DAX-3
• DAX-3: 3kW
• DAX-5: 5kW
• DAX-6: 6kW
STEP 15
On page 5 of the VT100 screens hit the “M” key
STEP 16
Use the up/down arrow keys on the keyboard to adjust the B+ DAC until
the DC voltage reading on the meter of the B+ supply is as close to
300.0V as possible
STEP 17
Press the “Enter” key to store
STEP 18
Press the “2” key, type the number “300” and press the “Enter” key
STEP 19
With the transmitter still operating, set the transmitter to a power level
range that has been pre-set in the “level” menu to the following:
• DAX-1: 400W
• DAX-3: 1300W
• DAX-5: 2500W
• DAX-6: 2500W
NOTE:
(Verify that the number in the lower right-hand corner of the transmitter GUI display reads the number listed above).
STEP 20
While on page 5 of the VT100 screens, press the “N” key and the VT100
screen will display a “WAIT” message
STEP 21
If the “WAIT” message becomes “PASS” press the “Enter” key. If the
“WAIT” message becomes a “FAIL” message hit the “N” key again.
NOTE:
If this low-tap calibration fails more than once, there is a problem with the transmitter and a call to Harris Broadcast service may be required.
5.6.3
LVPS Replacement
The following section outlines the steps necessary to replace either of the industrial
power supplies: +12Vdc or +48Vdc.
5-18
STEP 1
Turn off CB1
STEP 2
Disconnect primary power to the transmitter
STEP 3
Note the yellow-wire numbers as they are currently attached to the
power supply terminals
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Section 5 Maintenance and Alignments
DAX-1/DAX-3
STEP 4
Remove the yellow wires from the power supply terminals
STEP 5
Unscrew the 2 fasteners holding the mounting plate to the wall
STEP 6
Unscrew the power supply to be replaced from the plate
STEP 7
Mount new power supply to plate with the screws from STEP 6
STEP 8
Mount plate to wall with the 2 fasteners from STEP 5
STEP 9
Re-attach yellow wires to corresponding terminals noted
STEP 10
Reconnect primary power to the transmitter
STEP 11
Turn on CB1
STEP 12
Press the METER button and then the up or down arrows to navigate to
the below screen
Figure 5-6 Meter Screen
STEP 13
On the replaced power supply, adjust the potentiometer next to green
LED and wire terminal on the top of the power supply for a correct
voltage (±5%) reading on this screen
STEP 14
Turn DAX transmitter on and observe for correct operation
5.6.4
PA MOSFET
Typically, a MOSFET device will fail as a short circuit. This can be detected by reading
the resistance, in-circuit, between the Gate and the Source with an Ohmmeter: A
reading of less than 100 Ohms indicates a failed MOSFET.
If it has been determined that a pair or more of MOSFETs needs to be replaced, special
attention should be paid to the following issues:
5/2/2013
•
Ferrite bead location and size: Please note there are 3 different sized beads strategically installed on certain MOSFET leads. Be sure to replace the correct bead back on
the correct lead of the correct MOSFET before soldering.
•
Insulator must be replaced: There is a small insulator between the MOSFET and
the heatsink. It may be easy to overlook or misplace. These insulators should be
replaced by new when replacing MOSFETs.
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5-19
Section 5 Maintenance and Alignments
•
5-20
DAX-1/DAX-3
Beads and insulators are included along with MOSFETs as part of the MOSFET
Replacement Kit.
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DAX-1/DAX-3
Section 6
Troubleshooting
6.1
6
Introduction
This section is to be used by the service technician to go beyond the steps provided in
the Emergency Operation section (in Chapter 3) to troubleshoot a DAX malfunction.
Use this along with the provided schematic package for detailed circuit understanding
and diagnosis.
NOTE:
Before preceding, see "3.4 Emergency Operation" on page 3-9 for initial steps in
restoring a DAX transmitter to operational status in the event of a fault condition.
!
WARNING:
DISCONNECT PRIMARY POWER PRIOR TO SERVICING THE DAX TRANSMITTER.
HIGH VOLTAGE IS PRESENT EVEN WHEN MAIN CIRCUIT BREAKER CB1 IS
TURNED OFF.
!
CAUTION:
DO NOT DISCONNECT, RECONNECT, REMOVE, OR ALTER ANY PC
BOARDS WITH AC MAINS POWER CONNECTED TO DAX TRANSMITTER.
!
CAUTION:
DO NOT OPERATE DAX TRANSMITTER WITH DOORS, SHIELDS OR PANELS
REMOVED.
6.2
Diagnostics
A wealth of information is obtainable via the front panel, individual board indications
and VT100 parameters to help discern the cause of a failure within the DAX transmitter.
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6-1
Section 6 Troubleshooting
6.2.1
DAX-1/DAX-3
Fault Log
Certain faults are listed for quick reference in Table 6-1 on page 6-27. The most recent
fault will be displayed as the topmost listing.
To assist in determining the possible causes of a malfunction, the DAX transmitter
stores fault occurrences including the elapsed time since they occurred.
The DAX controller stores 75 fault listings and operates with the first in first out (FIFO)
concept of data repletion. In other words, the fault log will only contain the last 75
faults. It is highly unlikely that there would ever be 75 faults to be listed, but it is
possible if the fault log had not been reset for a very long period and/or there was many
nuisance fault trips, that early faults would be ’pushed out’ by the more recent faults never totalling more than 75.
NOTE:
Upon loss of AC power to the DAX controller after or during a fault condition,
fault time information may be incorrect.
6.2.1.1
Viewing the Fault Log
Viewing the Fault Log on the GUI screen can be accomplished y the following
procedure:
STEP 1
Pressing the INFO button takes you to below screen
Figure 6-1 INFO Screen
STEP 2
Select FAULT SUBMENU using the UP or DOWN buttons
STEP 3
Press ENTER to bring up below screen
Figure 6-2 Fault Log Screen
6-2
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Section 6 Troubleshooting
DAX-1/DAX-3
STEP 4
6.2.1.2
If more than three faults are present, they can be viewed by scrolling
using the UP or DOWN buttons
Fault Log Reset
Once the technician has noted faults, it may be desirable to clear the Fault Log. To do
so, from the Fault Log screen press and hold the ENTER button for >2 seconds. The
listed faults will highlight and then be permanently deleted.
6.2.2
Using VT100 for Metering, Status & Configuration
For all meter readings and programming including and beyond the front panel abilities,
the VT100 is the emulation method used to interface a computer with the DAX
transmitter. Any parameter accessible on the front panel GUI can also be viewed
and modified via VT100. By using a PC and terminal application of your choice (such
as HyperTerminal) connected to the COM 2 port (J16) on the External I/O board with a
serial cable with DB-9 connector, you’ll have access to the VT100 screens.
This section outlines the steps necessary to physically connect, start the terminal
program, electronically handshake with, navigate the VT100 screens, and perform
edits.
STEP 1
Turn transmitter off
STEP 2
Connect RS-232 comm port 2 (J16) on External I/O board to your PC
STEP 3
Turn transmitter on
STEP 4
Start terminal program (such as HyperTerminal) with following settings
• Bits Per Second = 57600
• Data Bits = 8
• Parity = None
• Stop Bits = 1
• Flow Control = None
• Emulation = VT100
STEP 5
Call, or hit "Enter" twice to initiate handshake
To navigate around the VT100 screens:
• Left/Right arrows to page back/forward
• Up/Down arrows to move cursor within page
To edit a numerical entry:
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6-3
Section 6 Troubleshooting
DAX-1/DAX-3
STEP 1
Type the line number or letter in parenthesis - do NOT hit "Enter"
STEP 2
Use up/down arrow keys to increase/decrease numerical value
(with the exception of the Meter Calibration section, where it is required
to type in the numerical value)
STEP 3
Press the "Enter" key to store that entry
• EXAMPLE: To change the Forward Power Range of Power Level 4 to
2800W; on page 2 of the VT100 screens, type "4", then use your keyboard’s up or down arrow keys to reach 2800. Then hit "Enter" on your
keyboard to store.
To toggle (turn on/off) a command:
STEP 1
Type the corresponding number or letter in parenthesis - do NOT hit
"Enter"
• EXAMPLE: To mute the DAX; on page 2 of the VT100 screens, type
the letter "e". Type "e" again to unmute the transmitter.
STEP 2
Type the same number or letter again to toggle that command
To access Page 4 of the VT100 programming:
From page 3, press and hold your keyboard’s "Shift" key, then press "1", then press "2",
and then press "3". From that point on during this session, you will have access to this
page by using the left/right arrow keys to page through all four VT100 screens.
NOTE:
If you are using a non-English keyboard you may need to set the Keyboard Properties to English from Windows Control Panel: Keyboard for the above procedure to work.
To access page 5 of the VT100 programming:
From page 4, press and hold your keyboard’s "Ctrl" key, then press "z". From that point
on during this session, you will have access to this page by using the left/right arrow
keys to page through all five VT100 screens.
NOTE:
The following section is a complete listing and description providing detailed
information of every available parameter within the DAX transmitter.
6-4
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Section 6 Troubleshooting
DAX-1/DAX-3
6.2.2.1
VT100 - Page 1
Figure 6-3
VT100 Page 1 View
6.2.2.1.1 SYSTEM
Forward Power: Transmitter output power measured using an RF detector on the
Output Monitor board. Forward power is limited to 115% of rated power.
NOTE:
Forward power detector calibration is available using (3) on VT100 page 5 (see
"6.2.2.5 VT100 - Page 5" on page 6-16).
Reflected Pwr: Reflected power to the transmitter measured using a detector on the
Output Monitor board. Instantaneous reflected trip point is factory set to 100W per PA
module.
NOTE:
Reflected power detector null and calibration is available using (4) & (5) on
VT100 page 5. Average reflected power trip is set using (I), also on VT100 page
5, to 70W per PA module (see "6.2.2.5 VT100 - Page 5" on page 6-16).
VSWR: Voltage standing wave ratio. Example: 1.009 reading indicates 1.009:1 ratio.
DC Voltage: High voltage power supply (B+) voltage measured via B+ Sample board.
Voltage range is 100V – 300V and varies with power level setting.
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6-5
Section 6 Troubleshooting
DAX-1/DAX-3
NOTE:
DC Voltage calibration is available using (2) on VT100 page 5 (see "6.2.2.5
VT100 - Page 5" on page 6-16).
DC Current: High voltage power supply DC current measured using the shunt in the
HVPS. No calibration required. Nominal DC current is approximately 4.5A per kW
with program modulation.
NOTE:
Instantaneous DC current trip point is factory set to 9.0A per PA module using
(O) on VT100 page 5 (see "6.2.2.5 VT100 - Page 5" on page 6-16). Average DC
current fault trip is set to 7.5A per PA module.
AC Voltage: High voltage power supply transformer SECONDARY AC voltage
measured on Power Supply Controller board. Nominal secondary voltage for DAX-1 &
DAX-3 is 240Vrms.
Nominal secondary for DAX-1 & DAX-3 is 240Vrms. Trip points are set to +13%/18%.
NOTE:
AC Voltage calibration is available using (1) on VT100 page 5 (see "6.2.2.5
VT100 - Page 5" on page 6-16).
Frequency: Transmitter Carrier frequency. This is set using (A) on VT100 page 5 (see
"6.2.2.5 VT100 - Page 5" on page 6-16).
Digital On/Off: Indication of audio input mode. If ON: DIGITAL AM MAG and
DIGITAL PHASE INPUTs are being used as source of audio and carrier. When OFF:
ANLG AUDIO input and either internal or external RF Carrier are being used as source
of audio and carrier.
Remote Enable: Indicates either ON: Remote enabled, or OFF: Remote disabled.
ePDM Frequency: Indicates the PDM frequency utilized in the transmitter. This
frequency is dependent on carrier frequency with the range being 150kHz – 200kHz.
10MHz Int/Ext: INT: Indicates that either the internal +/- 2 PPM 10MHz oscillator is
used as the frequency reference. EXT: Indicates that an externally supplied 10MHz
reference oscillator is being used via the 10MHz INPUT.
Filter Band: Indicates whether Band A, B, or C filter board is installed on the Exciter/
Controller. The frequency bands are set:
•
6-6
Band A – 529kHz – 759kHz
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Section 6 Troubleshooting
DAX-1/DAX-3
•
•
Band B – 760kHz – 1109kHz
Band C – 1110kHz – 1705kHz
Exciter/IO Rev: Indicates the board revisions for the Exciter/Controller board /
External I/O board.
SW Rev: Indicates the present software revision installed in the transmitter Exciter/
Controller board.
Fan 1, 2: Indicates the actual fan speed of the transmitter cooling fans. Normal
operation is approximately 100Hz. Fault occurs below 80 Hz.
6.2.2.1.2 CURRENT STATUS
PA 1 - 6: Indication of PA module status. Possible indications are: NA (Not Available)
indicating PA module not installed, OK indicating no faults present on PA module, or
FAULT.
Exciter: Indication of Exciter/Controller board status. Status can be OK or FAULT.
EXT IO: Indication of External I/O board status. Status can be OK or FAULT.
Foldback: ON: Indicates the transmitter has lowered output power due to high
reflected power (VSWR) in the transmitter. OFF: Normal operation.
Mute: When MUTE is displayed, indicates the output power of the transmitter has been
muted. OK indicates normal operation.
Interlock: When INTLK is displayed, indicates either an internal PA interlock, output
monitor interlock, or external interlock is present. OK indicates normal operation.
Tail Biter: Tail Biter is an optional distortion reduction technique utilized in the
transmitter. When ON, indicates this option is installed. Status is ON or OFF.
Ideal Range: The HVPS in the transmitter is varied to optimize the dynamic range of
the enhanced PDM circuitry. When the DAX is operating in this optimum dynamic
range, a YES indication is displayed.
If NO is displayed, reset the power level via the procedure outlined in section "3.3.3.3
To Set Desired RF Power Output Level" on page 3-5.
Time: The total-time meter of the transmitter is shown in hours:minutes:seconds in this
display. The time presented indicates the time that the transmitter is powered, NOT
transmitter ON time.
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Section 6 Troubleshooting
DAX-1/DAX-3
Security Key: NA indicates the optional Security Key is not installed on the PA
Motherboard. When installed, the Security Key enables advanced correction, digital
mode operation, and distortion reduction techniques in the transmitter. Display is NA or
OK.
6.2.2.1.3 METERS
Exhaust Temp: Temperature measured on the Output Monitor board. Temperature
Fault (OM TEMP) occurs at 62º C.
V+ DTG: Dead Time Generator adjustment voltage measured on the Exciter/
Controller. This voltage directly corresponds to the transmitter carrier frequency
setting. Scaling is 1V per 100kHz.
V+ ePDM: Enhanced PDM adjustment voltage measured on the Exciter/Controller.
This voltage directly corresponds to the ePDM frequency. V+ePDM = (FePDM –
150kHz)*(2/50kHz) + 6
+48: DC voltage used to drive the PA chopper FETs, Exciter/Controller DTG, Output
Monitor circuitry, and cooling fans. Monitoring of fault condition is set at +/-10%.
+12: DC control voltage used for the PA modules, External I/O, Exciter/Controller, and
Output Monitor circuitry. Monitoring of fault condition is set at +/-10%.
-12: DC control voltage used for the PA modules, External I/O, Exciter/Controller, and
Output Monitor circuitry. Monitoring of fault condition is set at +/-10%.
+5: DC logic voltage used for the External I/O, and Exciter/Controller boards.
Monitoring of fault condition is set at +/-10%.
-5: DC voltage used for the Exciter/Controller board. Monitoring of fault condition is
set at +/-10%.
+3.3: DC logic voltage used for the External I/O, and Exciter/Controller boards.
Monitoring of fault condition is set at +/-10%.
+1.8: DC logic voltage used for the External I/O, and Exciter/Controller boards.
Monitoring of fault condition is set at +/-10%.
RFLD PWR Trip: Reflected power trip adjustment voltage set on the Exciter/
Controller. When set up correctly, this voltage corresponds to a reflected power trip of
100W (peak) per PA.
6-8
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Section 6 Troubleshooting
DAX-1/DAX-3
6.2.2.2
VT100 - Page 2
Figure 6-4
VT100 Page 2 View
6.2.2.2.1 Remote Control
NOTE:
All remote functions with the exception of (B) Off and (E) Mute are ignored
when the transmitter user interface Remote Enable is OFF.
(A) On: Pressing ‘A’ will turn the transmitter ON.
(B) Off: Pressing ‘B’ will turn the transmitter OFF.
(C) Raise: Pressing ‘C’ will raise the output power of the transmitter.
(D) Lower: Pressing ‘D’ will lower the output power of the transmitter.
(E) Mute: Pressing ‘E’ will mute the transmitter.
(F) Toggle Audio Mode: Pressing ‘F’ will change the audio input mode selection from
ANALOG to DIGITAL and vise versa.
(G) Fault Reset: Pressing ‘G’ will reset any faults present in the transmitter.
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Section 6 Troubleshooting
DAX-1/DAX-3
(H) Primary PA (DAX-1R only): Allows switching of on-air PA module. ‘A’ selects
bottom PA as primary, ‘B’ selects top PA as primary.
NOTE:
The actual switching of PAs does not take place until the DAX transmitter is
restarted, which can simply be pushing the ON button while the transmitter is
running.
6.2.2.2.2 Power Settings
(1) Level 1: Pressing ‘1’ changes the transmitter power setting to Level 1.
(2) Level 2: Pressing ‘2’ changes the transmitter power setting to Level 2.
(3) Level 3: Pressing ‘3’ changes the transmitter power setting to Level 3.
(4) Level 4: Pressing ‘4’ changes the transmitter power setting to Level 4.
(5) Level 5: Pressing ‘5’ changes the transmitter power setting to Level 5.
NOTE:
To set the Power Level range see "6.2.2.4 VT100 - Page 4" on page 6-12
6.2.2.2.3 Status
On/Off: Indicates status of transmitter for remote. Display is either ON or OFF.
Forward Power: Indicates transmitter output power.
Reflected Pwr: Indicates transmitter reflected power.
Mute: When ACTIVE is displayed, indicates the output power of the transmitter has
been muted. INACTIVE indicates normal operation.
Fault: When ACTIVE, indicates a fault present on the transmitter.
Foldback: When ACTIVE, indicates the transmitter has lowered output power due to
high reflected power. INACTIVE is normal operation.
Interlock: When ACTIVE, indicates either a PA interlock or external interlock
condition is present. INACTIVE is normal operation.
Power Level: Indicates the Power Level selected. Displays 1, 2, 3, 4, or 5.
6-10
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Section 6 Troubleshooting
DAX-1/DAX-3
6.2.2.3
VT100 - Page 3
Figure 6-5
VT100 Page 3 View - Fault Log
NOTE:
See "6.4 Fault Log Listing" on page 6-27 of this chapter to view the complete
listing of possible DAX transmitter faults. This table also includes a description
of each fault and an explanation of the transmitter’s response to the fault.
INDEX – Up to 75 faults can be logged into the circular fault log. When 75 has been
reached the oldest fault will be discarded when a new fault occurs.
TYPE – Indicates the name of the fault logged.
STATUS – Indicates whether the fault is still present (ACTIVE), or is no longer present
(INACTIVE).
OCCUR TIME – Logs when the fault occurred relative to the present time. Example:
If the occur time is 0002:10:00 the fault occurred 2 hours and 10 minutes ago.
CLEAR TIME - Logs when the fault cleared relative to the present time. Ex. If the
clear time is 0002:01:00 the fault occurred 2 hours and 1 minutes ago.
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Section 6 Troubleshooting
DAX-1/DAX-3
NOTE:
Note that pressing ‘R’ resets the fault log. Pressing UP/DOWN arrow keys scroll
thru the fault log.
6.2.2.4
VT100 - Page 4
Figure 6-6
VT100 Page 4 View
6.2.2.4.1 SETUP
(A) Power Level 1: Pressing ‘A’ will allow the user to raise or lower the desired power
range setpoint for Power Level 1 using the UP/DOWN arrow keys.
(B) Power Level 2: Pressing ‘B’ will allow the user to raise or lower the desired power
range setpoint for Power Level 2 using the UP/DOWN arrow keys.
(C) Power Level 3: Pressing ‘C’ will allow the user to raise or lower the desired power
range setpoint for Power Level 3 using the UP/DOWN arrow keys.
(D) Power Level 4: Pressing ‘D’ will allow the user to raise or lower the desired power
range setpoint for Power Level 4 using the UP/DOWN arrow keys.
(E) Power Level 5: Pressing ‘E’ will allow the user to raise or lower the desired power
range setpoint for Power Level 5 using the UP/DOWN arrow keys.
6-12
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Section 6 Troubleshooting
DAX-1/DAX-3
(F) Mod. Mon. Level 1: Pressing ‘F’ will allow the user to raise or lower the Mod
Monitor output signal on the External I/O board BNC connector when the transmitter is
ON in Power Level 1. The UP/DOWN arrow keys are used raise/lower the output
signal.
(G) Mod. Mon. Level 2: Pressing ‘G’ will allow the user to raise or lower the Mod
Monitor output signal on the External I/O board BNC connector when the transmitter is
ON in Power Level 2. The UP/DOWN arrow keys are used raise/lower the output
signal.
(H) Mod. Mon. Level 3: Pressing ‘H’ will allow the user to raise or lower the Mod
Monitor output signal on the External I/O board BNC connector when the transmitter is
ON in Power Level 3. The UP/DOWN arrow keys are used raise/lower the output
signal.
(I) Mod. Mon. Level 4: Pressing ‘I’ will allow the user to raise or lower the Mod
Monitor output signal on the External I/O board BNC connector when the transmitter is
ON in Power Level 4. The UP/DOWN arrows are used raise/lower the output signal.
(J) Mod. Mon. Level 5: Pressing ‘J’ will allow the user to raise or lower the Mod
Monitor output signal on the External I/O board BNC connector when the transmitter is
ON in Power Level 5. The UP/DOWN arrow keys are used raise/lower the output
signal.
(K) LCD Contrast: Pressing ‘K’ will allow the user to change the contrast of the
transmitter LCD interface using the UP/DOWN arrow keys.
(L) ePDM Correction: Pressing ‘L’ allows the operator to invoke the optional adaptive
PDM filter correction when the Security Key is installed. When in ADAPT mode, the
Digital Signal Processor (DSP) on the Exciter/Controller monitors key parameters of
the transmitter output signal to optimize frequency and amplitude response in addition
to keeping a fixed-delay audio path thru the transmitter. Prior to taking any action on the
signal, however, the DSP ensures the following:
•
•
•
•
AD( ): Signal has not saturated the feedback PDM Sample A/D converter
RMS( ): Signal has adequate signal amplitude
DELAY( ): Relative signal delay is within limits
PSD( ): Signal has adequate frequency content
If any of the above conditions are not satisfied an X will be displayed in the associated
parenthesis and the equalization filter will remain unchanged. When all conditions are
satisfied the ePDM equalization filter is updated.
Selections for ePDM correction are ADAPT, HOLD, DEFAULT, and BYPASS.
ADAPT is the normal run mode of continuous correction
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Section 6 Troubleshooting
DAX-1/DAX-3
HOLD will stop the filter adaptation and keep the present equalization filter in effect.
The equalization filter, however, will be lost on an interruption of AC power.
DEFAULT retrieves the saved PDM filter from the selected non-volatile ePDM Default
Table. This filter will be restored upon reapplication of AC power.
BYPASS will disable all ePDM filter correction.
(M) NL Correction: Pressing ‘M’ will allow the user to enable (DEFAULT) or disable
(BYPASS) transmitter non-linear correction. The NL Correction (also referred to as
AM2AM Correction) can only be enabled when the Security Key is installed. The nonlinear characteristics of the transmitter are calculated by the DSP during an off-line
automated training process invoked by using (K) on page 5 of the VT100 (see "6.2.2.5
VT100 - Page 5" on page 6-16).
(N) PM Correction: Pressing ‘N’ will allow the user to enable (DEFAULT) or disable
(BYPASS) transmitter phase modulation correction. The PM Correction (also referred
to as AM2PM Correction) can only be enabled when the Security Key is installed. The
phase modulation characteristics of the transmitter are calculated by the DSP during an
off-line automated training process invoked by using (K) on page 5 of the VT100 (see
"6.2.2.5 VT100 - Page 5" on page 6-16).
(O) 10MHz Reference: Pressing ‘O’ toggles the frequency reference selection between
internal +/- 2 PPM 10MHz oscillator, or an external 10MHz reference oscillator via the
10MHz INPUT connector (BNC) on the External I/O board.
(P) Carrier: Pressing ‘P’ toggles the carrier selection for Analog Mode between
internal synthesizer, or an external Carrier signal via the CARRIER INPUT connector
(BNC) on the External I/O board.
NOTE:
For Digital Mode, an external digital phase signal via the DIGITAL PHASE
INPUT connector (BNC) on the External I/O must be used.
(Q) Toggle PDM default table: Pressing ‘Q’ steps to the next table of the ePDM filter
default tables. 4 tables can be stored and are used when the ePDM Correction is set to
the DEFAULT mode.
(R) Save Default Filter to Index: When the ePDM Correction is in ADAPT mode,
pressing ‘R’ will store the present ePDM equalization filter to the Default Filter table
whose index is set by (Q) above.
(S) Analog Audio Coupling: Pressing ‘S’ will toggle between AC and DC coupling of
the input analog audio signal. In Analog mode set to AC coupling for normal operation.
(T) Digital Audio Coupling: Pressing ‘T’ will toggle between AC and DC coupling of
the input DIGITAL AM MAG signal. For IBOC Digital mode set to AC coupling for
normal operation.
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DAX-1/DAX-3
(U) Remote Power Limit: Remote power limit establishes the maximum output power
of the transmitter when the RMT POWER LIMIT SEL input on the External I/O
customer interface is active. Pressing ‘U’ will allow the user to raise or lower the power
limit using the UP/DOWN arrow keys.
(V) Digital Mode Analog BW: Digital Mode Analog Bandwidth sets the amount of
frequency content required for the adaptive ePDM filter correction to equalize. This
setting must match the Analog Modulation bandwidth setting in the DEXSTAR exciter
or audio processor. Pressing (V) toggles between 5kHz, 8kHz, and DRM.
IMPORTANT:
This setting is critical for the ePDM Correction to operate properly. Selection of
5kHz, 8kHz or DRM is available, and must be made before the "training" process
which is accessed via the VT100 Page 5 (K) prompt and described in "6.2.2.5.1
SETUP" on page 6-16 below.
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Section 6 Troubleshooting
6.2.2.5
!
DAX-1/DAX-3
VT100 - Page 5
CAUTION:
CHANGING PARAMETERS ON THIS PAGE CAN CAUSE PERMANENT
DAMAGE TO THE TRANSMITTER IF SUBSEQUENT PROPER SETUP
PROCEDURES ARE NOT PERFORMED.
NOTE:
This section is primarily for informational purposes only. The only parameters
that might be altered would be those indicated as part of a procedure described
within this manual.
Figure 6-7
VT100 Page 5 View
6.2.2.5.1 SETUP
(A) Frequency: Pressing ‘A’ will allow the user to raise or lower the desired carrier
frequency for the transmitter using the UP/DOWN arrow keys. When the carrier
frequency is changed, an output filter alignment, exciter alignment, and potential
change of the Exciter/Controller FD Filter Board is required.
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Section 6 Troubleshooting
(B) DAX Model: Pressing ‘B’ will allow the user to change the model of the
transmitter using the UP/DOWN arrow keys. Selection of DAX-6, DAX-5, DAX-3,
DAX-1, and DAX-1R is available.
(C) # of Phases: Allows the user to specify the transmitter AC input phase as either
Single or Three. Changing the # of phases requires the user to recalibrate the Power
Supply Low Tap Calibration using (N) PSTAPLOW CAL on VT100 page 5 (described
below).
(D) FPGA PDM Filter Toggle: Pressing ‘D’ allows the user to enable (ON) or disable
(OFF) the ePDM Correction equalization filter. This setting, if OFF, overrides any
mode setting for ePDM Correction mode on (L) ePDM Correction on VT100 page 4
(see "6.2.2.4 VT100 - Page 4" on page 6-12). Normal operation is ON.
(E) FPGA AM2AM TOGGLE: Pressing ‘E’ allows the user to enable (ON) or disable
(OFF) the NL Correction (also referred to as AM2AM correction). This setting, if OFF,
overrides any mode setting for NL Correction mode on (M) NL Correction on VT100
page 4 (see "6.2.2.4 VT100 - Page 4" on page 6-12). Normal operation is ON.
(F) FPGA AM2PM TOGGLE: Pressing ‘F’ allows the user to enable (ON) or disable
(OFF) the PM Correction (also referred to as AM2PM correction). This setting, if OFF,
overrides any mode setting for PM Correction mode on (N) PM Correction on VT100
page 4 (see "6.2.2.4 VT100 - Page 4" on page 6-12). Normal operation is ON.
(G) FPGA BPLUS CORR TOGGLE: Pressing ‘G’ allows the user to enable (ON) or
disable (OFF) the HVPS Correction (also referred to as BPLUS Correction). HVPS
correction compensates for low frequency ripple and droop on the high voltage power
supply. Normal operation is ON.
(H) TAIL BITER: Pressing ‘H’ allows the user to enable (ON) or disable (OFF) the
optional distortion reduction technique (Tail Biter) utilized in the transmitter. With the
Security Key installed, normal operation is ON.
(I) Reflected Power Trip: Pressing ‘I’ allows the user to raise or lower the average
reflected power trip point calculated in the DSP. Factory setting is 70W per PA module.
Example: For a DAX-3 transmitter the user should enter 210W.
(J) Analog SF Adjust: Pressing ‘J’ allows the user to raise or lower the Analog Scale
Factor Adjustment. This adjustment compensates for modulation losses from low
power to high power operation. To perform adjustment set the transmitter to lowest
power setting and apply 90% modulation using external source or internal test tone
generator. Set modulation monitor to 100% level, and verify 90% modulation. Change
transmitter power setting to highest power setting, set modulation monitor level to
100%, and adjust Analog SF Adjust using the UP/DOWN arrow keys until 90%
modulation is achieved.
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Section 6 Troubleshooting
DAX-1/DAX-3
(K) Training: 1 2 3 4 5: Pressing ‘K’ initiates the automated off-line training sequence
for NL (AM to AM) & PM (AM to PM) correction.
NOTE:
Prior to training, the user should have stored the range setpoints for all 5 power
levels and terminated the transmitter into a dummy load. The training sequence
requires approximately 2-3 minutes to complete.
The training sequence will switch to internal waveform generation mode where a series
of different waveforms are modulated, and the output of the transmitter at each power
level is evaluated to determine timing delays as well as AM/AM and AM/PM
characteristics. For each power level a pass (P) or fail (F) indication will be temporarily
displayed. Should a power level fall below the minimum required for reliable
adaptation, a B is displayed indicating the particular power level has been bypassed.
PM Delay: xx and PDM Delay: xx: This is the correlation delay result for factory
troubleshooting use only
(L) Security Key Warning: The Security Key for DAX series transmitters is installed
onto the PA Motherboard and allows advanced correction, digital mode, and distortion
reduction technique options to be activated. When a Security Key option is installed,
the factory setup procedure enables the Security Key Warning (ON). In the event of a
Security Key hardware failure the transmitter will display a Security Key ’NA’ on
VT100 page 1 (see "6.2.2.1 VT100 - Page 1" on page 6-5), but allows the advanced
features to remain enabled for a 7 day grace period. Upon expiration of the 7 days, all
options are disabled until a valid response from the Security Key is received.
If this is toggled OFF and the Security Key fails there will simply be no GUI
notification as the 7 days pass and the options become disabled.
6.2.2.5.2 METER CALIBRATION
(1) AC Volt. Cal: Pressing ‘1’ allows the user to enter the Secondary AC voltage (via
the numeric keypad) calibration as measured on the HVPS transformer secondary.
(2) B+ Calibration: Pressing ‘2’ allows the user to enter the HVPS B+ voltage
calibration.
NOTE:
(Q) Disable B+ Voltage Faults, below, allows the B+ fault to be temporarily
masked in the event an incorrect calibration is entered and the transmitter will not
remain in the ON state.
(3) Forward Power Cal.: Pressing ‘3’ allows the user to calibrate the forward power
displayed on both the transmitter user interface and the VT100.
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DAX-1/DAX-3
(4) Reflected Power Null: Pressing ‘4’ allows the user to enter a voltage offset to
compensate for any bias voltage present on the reflected power detector. Factory use
only
(5) Reflected Power Cal.: Pressing ‘5’ allows the user to calibrate the reflected power
displayed on both the transmitter user interface and the VT100.
6.2.2.5.3 B+ CAL
(M) 300V B+ DAC: Pressing ‘M’ allows the user to adjust the HVPS B+ voltage to
300Vdc when in the high transformer tap. After pressing ‘M’ the user can raise or lower
the B+ supply voltage using the UP/DOWN arrow keys.
(N) PSTAPLOW CAL: Pressing the ‘N’ allows the user to initiate the off-line Power
Supply Tap Low Calibration. This calibration allows the DSP to linearize the low tap
voltage command.
m: and b: Result #s for factory troubleshooting use only.
(O) DC Current Peak Limit (x10): Pressing ‘O’ allows the user to adjust the
instantaneous DC current trip point. Factory set to 8.5A per PA module.
DC Voltage: Displays the HVPS B+ voltage during B+ calibration.
B+ voltage faults are: Indicates the present B+ fault mask setting. Displays either
‘enabled’ (normal operation) or ‘disabled’ (masked, for B+ calibration only).
(P) Enable B+ Voltage Faults: Pressing ‘P’ allows the user to re-enable the B+ voltage
fault.
(Q) Disable B+ Voltage Faults: Pressing ‘Q’ allows the user to disable the B+ voltage
fault. For use during B+ calibration only.
NOTE:
This mask will expire upon interruption of AC power, or after 10 minutes of
operation.
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6-19
Section 6 Troubleshooting
6.2.2.6
!
DAX-1/DAX-3
VT100 - Page 6
CAUTION:
CHANGING PARAMETERS ON THIS PAGE CAN CAUSE PERMANENT
DAMAGE TO THE TRANSMITTER IF SUBSEQUENT PROPER SETUP
PROCEDURES ARE NOT PERFORMED.
NOTE:
This section is primarily for informational purposes only. The only parameters
that might be altered would be those indicated as part of a procedure described
within this manual.
NOTE:
To access page 6 of the VT100 programming: From page 5, press and hold your
keyboard’s "Ctrl key, then press "z". From that point on during this session, you
will have access to this page by using the left/right arrow keys to page through all
VT100 screens.
6.2.2.6.1 FPGA REGISTERS
FPGA Rev: Displays the present version, then revision, of the Field Programmable
Gate Array (FPGA) firmware.
•
6-20
Example: 0620 is version 62 revision 0.
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Section 6 Troubleshooting
FPGA Ctrl: Internal FPGA Control Register. Displayed as an aid in troubleshooting
only.
REF Mem. Ctrl: Internal FPGA Reference Memory Controller register. Displayed as
an aid in troubleshooting only.
Prog.. Div.: Internal FPGA Programmable Divide register. Displayed as an aid in
troubleshooting only.
UART1 Status: Internal FPGA Universal Asynchronous Receiver/Transmitter (UART)
register. Displayed as an aid in troubleshooting only.
UART2 Status: Internal FPGA Universal Asynchronous Receiver/Transmitter register.
Displayed as an aid in troubleshooting only.
LCD FIFO STAT: Internal FPGA LCD FIFO Status register. Displayed as an aid in
troubleshooting only.
(A) Audio Scale: Pressing ‘A’ allows the user to increase or decrease the gain applied
to the audio A/D input using the UP/DOWN arrow keys. In normal operation this
setting is calculated by the DSP to provide consistent modulation across the power
levels.
(B) Carrier Level: Pressing ‘B’ allows the user to increase or decrease the internal
carrier level added to the scaled audio input using the UP/DOWN arrow keys. In normal
operation set to 8000.
(C) Fwd. Pwr. Scale: Pressing ‘C’ allows the user to raise or lower output power of the
transmitter by scaling the FPGA internal audio+DC signal using the UP/DOWN arrow
keys. This register is changed using the transmitter user interface Raise and Lower push
buttons, serial remote control, or customer I/O raise and lower.
Interrupt Mask: Internal FPGA Interrupt Mask register. Displayed as an aid in
troubleshooting only.
Interrupt Stat: Internal FPGA Interrupt Status register. Displayed as an aid in
troubleshooting only.
(W) Train Power: Pressing ‘W’ allows the user to raise or lower the percentage of the
maximum power setting used during the off-line automated NL and PM Correction
training using the UP/DOWN arrow keys. In normal operation set to 030%.
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Section 6 Troubleshooting
DAX-1/DAX-3
6.2.2.6.2 Test Tone Setup
(1) Amplitude: Pressing ‘1’ allows the user to raise or lower the level of modulation of
the test tones used in the off-line training sequence using the UP/DOWN arrow keys. In
normal operation set to 9000.
(2) # of Tones: Pressing ‘2’ allows the user to raise or lower the number of test tones
used in the off-line training sequence using the UP/DOWN arrow keys. In normal
operation set to 14.
(3) HPF Sparse #: Pressing ‘3’ allows the user to increase or decrease the length of
equalization filter by inserting sparse taps between the filter taps used to estimate the
transmitter output filter during the off-line NL and PM Correction training sequence.
This equalization filter compensates the RF Sample feedback signal for amplitude and
frequency response prior to being used to estimate the NL and PM characteristics. In
normal operation set to 0.
(4) HPF Taps: Pressing ‘4’ allows the user to increase or decrease the number of digital
filter taps used to estimate the output filter response during the off-line NL and PM
correction training sequence. In normal operation the HPF Taps are set to:
32 for DAX-5 & 6 models
16 for DAX-1, 3 & 1R models
(5) NL Sparse #: Pressing ‘5’ allows the user to increase or decrease the number of
sparse taps inserted between the four 5th-order polynomials used to correct the
nonlinear characteristics of the transmitter. In normal operation set to 3.
(Z) 1kHz Test Tone: Pressing ‘Z’ allows the user to enable the built-in pattern
generator which disables the audio input and outputs a 1kHz 90% modulation tone. This
tone is typically used to setup the feedback samples on the Exciter/Controller.
(E) Address: Pressing ‘E’ allows the user to enter a hexadecimal DSP address used to
peek and poke data in the DSP memory map. This feature is used for debug and
troubleshooting only and can cause improper operation of transmitter if improperly
used.
(F) Poke Value: Pressing ‘F’ allows the user to enter a hexadecimal data value to be
stored at the DSP address in (E) above. This feature is used for debug and
troubleshooting only and can cause improper operation of transmitter if improperly
used.
(G) Peek: Pressing ‘G’ allows the user to read a hexadecimal data value stored at the
DSP address in (E) above.
(H) Increment Address: Pressing ‘H’ increments the hexadecimal DSP address in (E)
above.
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DAX-1/DAX-3
6.2.2.6.3 AM2PM Delay Calibration
(J) Manual: Pressing ‘J’ allows the user to adjust the AM/PM (PM Correction) delay
in the Exciter/Controller. This delay compensates for the inherently longer delay in the
audio path with respect to the carrier delay thru the transmitter and allows the phase
correction based on amplitude to re-align with the amplitude at the PA module. Manual
delay adjustment is typically not necessary as the DSP calculates the delay during the
off-line NL and PM Correction training sequence.
(K) Save: Pressing ‘K’ allows the user to save the manual AM2PM delay adjustment
made in (J) above to non-volatile memory.
6.2.2.6.4 PDM Delay Calibration
(N) Manual: Pressing ‘N’ allows the user to adjust the ePDM equalization filter delay
in the Exciter/Controller. This delay selects the digital filter tap used to time-correlate
the reference memory with the RF Sample memory during ePDM equalization filter
estimation. Manual delay adjustment is typically not necessary as the DSP calculates
the delay during the off-line NL and PM Correction training sequence and will hold this
delay constant.
(O) Save: Pressing ‘O’ allows the user to save the manual ePDM delay adjustment
made in (N) above to non-volatile memory.
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Section 6 Troubleshooting
6.3
DAX-1/DAX-3
General Troubleshooting Information
6.3.1
Schematics, Wiring and Block Diagrams
The following schematic and signal name conventions apply:
•
Active Low = "/" - A signal name preceded by the forward slash is an active low.
Example: /TEMP_FAULT means the Temp Fault signal is active when at a low state
(also known as TEMP_FAULT ’not’, or TEMP_FAULT ’bar’).
•
Schematic Continuation - A square block ending point of a named signal, accompanied by a number-forward slash-letter-number is an indication of that signal continuing on to another page of schematic.
Example: AUDIO 14/D1 - Indicates that the AUDIO signal will continue to page 14 of
same numbered schematic at a point where the X coordinate ’D’ meets the Y coordinate
’1’.
•
LEDs used to display a given condition when illuminated are designated as DS(n),
with (n) indicating the LED’s designator value as shown on the board’s schematic
and silkscreen.
Example: DS4 is the Analog Mode Selected LED, indicating the Analog Mode is
currently selected when it is illuminated (External I/O board).
6.3.2
3-Strike Routine
The 3-Strike type fault routine will be started when a certain fault occurs 3 times within
a 10 second time frame, or is a constant fault for 10 seconds. Upon this first ’strike’ the
DAX will temporarily mute, then simultaneously ramp back up to previous power level
while starting a 10 second timer. If the fault re-occurs 3 times or continuously during
this 10 seconds, a 2nd ’strike’ will be issued following the same routine as previously
described. If the fault continues during this next 10 second period, the 3-Strike routine
will shut the transmitter off, requiring a manual re-start.
NOTE:
A VSWR related 3-Strike Routine is 3 strikes within a 5 second time frame, initiating a foldback routine.
6.3.3
Foldback Routine
For foldback type fault conditions, a 3-Strike routine triggers a 10% power reduction. If
the faulting condition continues to exist, a second 3-Strike routine triggers another 10%
6-24
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DAX-1/DAX-3
power reduction. This series of events will continue until 20% of TPO is reached, at
which time the DAX transmitter will be faulted off.
If, at some time during the foldback process - but before the DAX is shut down, the
fault condition clears, the transmitter will begin a ramping up process. If the ON, OFF,
RAISE or LOWER buttons are pressed the foldback condition will clear.
6.3.4
Turn DAX On With No RF Power Output
Under certain conditions it may be desirable to turn the DAX on with high voltage on
but no RF power being output. This will allow for a slow ramp-up of power if
necessary.
STEP 1
From either an OFF or ON state, simultaneously press and hold both
RAISE and LOWER buttons for 5 seconds
STEP 2
Turn DAX transmitter ON, if OFF
STEP 3
Slowly ramp power back up with short presses of the RAISE button, as
needed
6.3.5
On-Air PA Module Service
IMPORTANT:
For normal PA module service, it is recommended that the transmitter be temporarily turned OFF before the module is reinserted.
If on-air service is required, follow the on-air module service procedure below to
mitigate risk of secondary transmitter damage (if blown fuses have been replaced with
new fuses but the underlying fault conditions still exist on the PA module, equipment
damage will result as the module is being inserted into a transmitter that is ON).
6.3.5.1
Mod Replacement: Spare PA Mod
DAX-1R and DAX-3: One PA module may be removed temporarily while the
transmitter is on-air. Once the key card is inserted a timer starts, allowing 5 minutes of
DAX operation. After 5 minutes it will be faulted OFF if a module is not reinserted and
the key card removed.
STEP 1
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A simple DC resistance check must be performed on PA modules prior
to insertion into a transmitter while the PA voltage is ON. With an
Ohmmeter, check resistance between the PA fuse, F1, and the drain of
FET (center pin). A slot is provided in the cover of the PA module to
access this point. Ensure resistance is greater than 5k Ohms.
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DAX-1/DAX-3
STEP 2
Insert PA module key card in slot BELOW module to be removed - PA
Module LED will turn amber
STEP 3
Unscrew right and left thumbscrews
STEP 4
Remove module
STEP 5
Install PA module verified in STEP 1 and tighten thumbscrews
STEP 6
Remove PA module key card
NOTE:
PA module may take up to 45 seconds before soft start is complete and module
turns ON.
6.3.5.2
Mod Replacement: Spare PA Dummy Mod
DAX-1R and DAX-3: For long-term removal of a single PA module (to avoid the
transmitter being faulted off after 5 minutes), the supplied ’dummy’ module will need
to be inserted in place of the removed PA:
NOTE:
Once the key card is inserted a timer starts, allowing 5 minutes of DAX operation. After 5 minutes it will be faulted OFF if a module is not reinserted and the
key card removed.
6-26
STEP 1
Insert provided PA module key card in slot BELOW module to be
removed - PA Module LED will turn amber
STEP 2
Unscrew right and left thumbscrews
STEP 3
Remove module
STEP 4
Install Dummy Module and tighten thumbscrews
STEP 5
Remove PA module key card
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Section 6 Troubleshooting
DAX-1/DAX-3
6.4
Fault Log Listing
Table 6-1
DAX Faults Listing (in alphanumeric order)
ACTION /
INDICATION
NAME
DESCRIPTION
+12V
Occurs with any positive voltage outside the
+13.2Vdc to +10.8Vdc range
Transmitter turns off
-12V
Occurs with any negative voltage outside
the -13.2Vdc to -10.8Vdc range
Transmitter turns off
+48V
Occurs with any voltage above +52.8Vdc
or below +43.2Vdc
Transmitter turns off
+5V
Occurs with any voltage above +5.5Vdc or
below +4.5Vdc
Transmitter turns off
+1.8V
Occurs with any voltage above +1.98Vdc
or below +1.62Vdc
Transmitter turns off
+3.3V
Occurs with any voltage above +3.63Vdc
or below +2.97Vdc
Transmitter turns off
10MHz DUTY
Occurs when the currently selected internal
10MHz clock, or external "10MHz Input" is
beyond the 40%-60% duty cycle limit
Transmitter mutes
AC VOLTAGE
HVPS secondary nominal voltage range of
+13%/-18% has been exceeded
DAX-5/DAX-6 3-phase Nominal = 260Vac
DAX-5/DAX-6 1-phase Nominal = 265Vac
DAX-1/DAX-3 Nominal = 240Vac
Transmitter 3-strikes off requiring
operator restart
+AUDIO WRN
Indicates the Audio AD converter has a
positive overflow condition (internal math
error)
Warning indication only Check input signal level and exciter
controller R39 setting
-AUDIO WRN
Indicates the Audio AD converter has a
negative overflow condition (internal math
error)
Warning indication only Check input signal level and exciter
controller R39 setting
B+ VOLTAGE
B+ Voltage: Fixed 360V overvoltage
threshold, or nominal commanded range
of +20%/-30% has been exceeded
Transmitter 3-strikes off requiring
operator restart
CARR.DUTY
Occurs when the currently selected internal
carrier, or external carrier ("Carrier Input"
or "Digital Phase Input") is beyond the
40%-60% duty cycle limit
Transmitter mutes
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Table 6-1
NAME
DAX-1/DAX-3
DAX Faults Listing (in alphanumeric order)
DESCRIPTION
ACTION /
INDICATION
DC AMP PEAK
HVPS B+ DC peak current has exceeded the
9.0A per PA module factory set trip point
Transmitter 3-strikes off requiring
operator restart
DC CURRENT
HVPS B+ average current calculated by the
DSP has exceeded the 7.5A per PA module
limit
Transmitter 3-strikes off requiring
operator restart
DTG VOLTAGE
Indicates the Dead Time Generator DC voltage
measured on the Exciter/Controller has
exceeded the nominal voltage +/-10%. Normal
scaling for the DTG is 1V per 100kHz carrier
frequency
Transmitter 3-strikes off requiring
operator restart
ePDM VOLT
Indicates the Advanced Pulse Duration
Modulation (APDM) DC voltage measured on
the Exciter/Controller has exceeded the nominal
voltage +/-10%.
Normal voltage scaling for the ePDM
signal is: (FePDM – 150kHz)*(2/50kHz)
+ 6.
Warning only Operator should reset power levels
to attain maximum performance
optimization
Indicates the equipment interlock loop
across J12-1 to 12-2 is open.
Transmitter turns off
FAN DRIVE
Occurs if DAX is on, but Fan Drive
command not enabled
Transmitter turns off
FAN FAULT
Multiple fan malfunction
Transmitter turns off
FAN WARN
1 or 2 fans malfunction warning (operating
at <80 Hz)
Transmitter switches to low power:
44% of nameplate power
FILTERBOARD
Filter board is wrong range for current DAX
frequency, or not installed
Transmitter mutes and turns off
KEY FAULT
Indicates Hot-Swap Key has been inserted
for greater than 5 minutes
Transmitter turns off
MB(x) KEY IN
Hot-Swap Key is currently inserted for the
motherboard (x) indicated
Warning on screen. Illuminates PA
Module LED amber (after 5 minutes
transmitter turns off)
MB(x) PA INTL
PA interlock condition on the motherboard
(x) indicated
Illuminates Interlock LED on Front
Panel
Pre-FPGA processor positive overload
Warning indication only Check input signal level and exciter
controller R39 setting
EQUIP INTLK
+MODLTN WRN
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DAX-1/DAX-3
Table 6-1
NAME
DAX Faults Listing (in alphanumeric order)
DESCRIPTION
ACTION /
INDICATION
-MODLTN WRN
Pre-FPGA processor negative overload
Warning indication only Check input signal level and exciter
controller R39 setting
OM INTLOCK
Indication of Output Monitor interlock
condition
Interlock LED illuminates and DAX
is shut off
Temperature of Output Monitor, in output
network, has exceeded 62°C threshold
Transmitter turns off
PA (x) BRIDGE
Faulted RF drive section for PA (x)
indicated
Faults OFF PA module Red LED indication
PA (x) KEY
Hot-Swap key is inserted for PA (x)
indicated
PA LED will be amber
PA (x) MODLTR
Modulator output does not match/follow
input for PA (x) indicated
Possible blown PA fuse
PA (x) OVRLAP
Bridge signal overlap for PA (x) indicated
Faults OFF PA module Red LED indication
PA overtemperature fault for PA (x)
indicated
Faults OFF PA module Red LED indication
PDM SAT WRN
Post-FPGA processor overload
Warning indication only Check input signal level
PK RFLD PWR
Peak (instantaneous) reflected power trip
Trips at 100W per PA Module
Mutes transmitter, and if continuous
initiates Foldback routine
Summary fault derived from PS (power
supply) Controller faults. Also indication of
PS Controller control cable disconnect.
See PS Controller for fault indication
LEDs:
- Transformer overtemperature
- Rectifier overtemperature
PS WARNING
PS (power supply) Controller discharge
circuit fuse failure
WARNING: DC discharge fuse is
blown possible high voltage
remaining in cabinet!
PWR LIMIT
Indicates a command for a power level
greater than 115% of TPO has been
requested
(May be an indication of a failed PA)
Power reduced
REF 10 MHZ
Indication of a low amplitude "10MHz
Input" signal
Threshold is <2.0Vpp
Transmitter mutes
OM TEMP
PA (x) TEMP
PS FAULT
5/2/2013
888-2500-001
WARNING: Disconnect primary power prior to servicing.
6-29
Section 6 Troubleshooting
Table 6-1
NAME
DAX-1/DAX-3
DAX Faults Listing (in alphanumeric order)
DESCRIPTION
ACTION /
INDICATION
RF CARRIER
Indication of a low amplitude external RF
carrier (currently selected: "Carrier Input"
or "Digital Phase Input") signal
Threshold is <2.0Vpp
Mutes transmitter
RFLD POWER
Averaged reflected power trip
Trips at 70W per PA Module
Mutes transmitter and, if continuous,
initiates Foldback routine
Security Key not present fault
(7 day grace period timer has expired)
Turns off 4 performance functions:
1) Low power variable voltage
capability (Any Power Level
Range setting below 1/2 TPO will
revert to 0W RF output)
2) DSP adaptive technology
3) Tail Biter circuitry
4) Digital mode capability
Security Key not present warning
Warning on screen Begins 7 day timer until Security
Key Fault (above) occurs
DC voltage did not stabilize in time
Adaptive capability disabled Restart suggested to try again
Turn on error, Transmitter was commanded
to turn on but did not respond
Transmitter will not start View Fault log
S. KEY FLT
S. KEY WARN
TRAINING
TURNON ERR
6-30
888-2500-001
WARNING: Disconnect primary power prior to servicing.
5/2/2013
Section 6 Troubleshooting
DAX-1/DAX-3
6.5
Power Supply System Troubleshooting
!
WARNING:
DISCONNECT PRIMARY POWER PRIOR TO SERVICING THE POWER SUPPLY SYSTEM OR THE POWER SUPPLY CONTROLLER BOARD.
This section is to further assist the technician in troubleshooting a possible power
supply system malfunction. Refer to the DAX schematic package and the AC/DC Flow
Block Diagrams, Figure 6-8 on page 6-32.
NOTE:
For servicing the Power Supply Controller board or associated PS components,
the Power Supply chassis can be slid rearward from the transmitter cabinet for
improved access. See "2.3.4.2 Transmitter AC Connection" on page 2-12 in Section 2 of this manual.
5/2/2013
888-2500-001
WARNING: Disconnect primary power prior to servicing.
6-31
Section 6 Troubleshooting
DAX-1/DAX-3
Figure 6-8
AC/DC Flow Block Diagram
6-32
888-2500-001
WARNING: Disconnect primary power prior to servicing.
5/2/2013
Section 6 Troubleshooting
DAX-1/DAX-3
6.6
PA Troubleshooting
This section is to further assist the technician in troubleshooting a probable RF power
malfunction. Refer to the DAX schematic package. For PA Module removal see "6.3.5
On-Air PA Module Service" on page 6-25 above.
Figure 6-9
RF Flow Diagram
6.6.1
PA Module Faults
Green - Indicates the PA is on
Amber - Indicates the Hot-Swap key is installed (to remove a PA)
Red - Indicates a PA module fault
6.6.2
MOSFET Replacement
If it has been determined that a PA module has failed due to a shorted MOSFET, see
"5.6.4 PA MOSFET" on page 5-19 for important details.
5/2/2013
888-2500-001
WARNING: Disconnect primary power prior to servicing.
6-33
Section 6 Troubleshooting
6.7
DAX-1/DAX-3
Audio Troubleshooting
This section provides a block diagram to assist the technician in troubleshooting a
possible audio signal malfunction. Refer to the DAX schematic package and Figure 610.
Figure 6-10
Audio Flow Diagram
6-34
888-2500-001
WARNING: Disconnect primary power prior to servicing.
5/2/2013
Section 6 Troubleshooting
DAX-1/DAX-3
6.8
Exciter/Controller Troubleshooting
If pressing the ON or OFF button for 5 seconds, and pressing switch S5 has not resolved
a possible control problem, take the following steps to reseat the Filter Board.
STEP 1
Turn off CB1
STEP 2
Remove AC Mains power
STEP 3
Remove front panel if not already removed
STEP 4
Carefully but firmly reseat filter board
STEP 5
Reapply power
STEP 6
Test
6.8.0.1
Board LED Indications
LED indicators on the Exciter include the following:
Reset:
Red – Indicates that the board is in a Reset condition
Mute:
Red – Mute condition
FPGA:
Red – Indicates that the FPGA is not configured
+3.3V FLT: Red – Indicates that the +3.3V supply is not active
+1.8V FLT: Red – Indicates that the +1.8V supply is not active
5/2/2013
888-2500-001
WARNING: Disconnect primary power prior to servicing.
6-35
Section 6 Troubleshooting
6.9
DAX-1/DAX-3
Testpoint Listing
The following table lists the pertinent testpoints and LEDs for each board of the DAX
transmitter and provides its function and nominal value when applicable.
NOTE:
Ground test points are not listed, however, be sure to use correct ground type if
multiple ground types are noted.
Table 6-2
On Board...
DAX Testpoint & LED Information Table
(All voltages listed are ±5%)
Name
TP(n)
or
LED
Function, Display
and/or
(Comment) or (Related Potentiometer)
Nominal
Value
2.88Vdc
±0.05V
External I/O
AC LOW TRIP
TP6
Factory threshold adjust for AC Low
Trip (R107)
External I/O
+4.096VREF
TP7
Onboard regulation - zener
+4.096
Vdc
External I/O
(-) AUDIO
(+) AUDIO
TP10
TP11
Audio input level
Audio input level
< 12V
< 12V
External I/O
+12V
TP12
Onboard regulation - zener
DS5
Green LED illuminates to indicate
+12V supply present
TP14
Onboard regulation - zener
DS6
Green LED illuminates to indicate 12V supply present
TP15
Onboard regulation - zener
DS7
Green LED illuminates to indicate
+28V supply present
TP16
Input from LVPS
DS8
Green LED illuminates to indicate
+48V supply present
TP17
Onboard regulation - IC
DS9
Green LED illuminates to indicate +5V
supply present
External I/O
External I/O
External I/O
External I/O
6-36
-12V
+28V
+48V
+5V
888-2500-001
WARNING: Disconnect primary power prior to servicing.
+12Vdc
-12Vdc
+28Vdc
+48Vdc
+5Vdc
5/2/2013
Section 6 Troubleshooting
DAX-1/DAX-3
Table 6-2
On Board...
DAX Testpoint & LED Information Table
(All voltages listed are ±5%)
Name
TP(n)
or
LED
Function, Display
and/or
(Comment) or (Related Potentiometer)
Nominal
Value
External I/O
DC VOLT ADJ
TP19
Power supply control signal
Set by Exciter/Controller board
(Varies with RF power output level)
0 - 9Vdc
External I/O
+3.3V
TP20
Onboard regulation - IC
+3.3Vdc
DS10
Green LED illuminates to indicate
+3.3V supply present
External I/O
INTLK
DS1
Red LED illuminates to indicate open
Interlock loop
External I/O
IBOC Mode
Selected
DS3
Green LED illuminates to indicate
IBOC Mode is currently selected
External I/O
Analog Mode
Selected
DS4
Green LED illuminates to indicate
Analog Mode is currently selected
Exciter
Controller
DDS CLK
TP1
High frequency master synthesizer
clock - 21.280 MHz to 42.240 MHz
(depending on carrier frequency)
TTL
Exciter
Controller
PM 4FC CLK
TP2
Phase modulated 4x carrier frequency
clock - Drives the RF Carrier
reconstruction D/A and has the AM/
PM correction applied
TTL
Exciter
Controller
PM RF CARR
ANLG
TP5
Phase Modulated RF Carrier Reconstructed RF Carrier out of the
D/A and reconstruction filter
Exciter
Controller
PM RF CARR
TTL
TP6
Phase Modulated RF Carrier TTL Digital signal which is the output of the
zero crossing detector. This input to
the detector is the Phase Modulated
RF Carrier Analog.
Exciter
Controller
CARR ANLG
TP7
Carrier Analog - Low pass filtered
input RF Carrier. This can originate
either from the Digital Phase input,
External RF Carrier Input, or the
internal synthesizer.
1 - 2Vpp
Exciter
Controller
CAR TTL
TP9
Carrier TTL - This is the multiplexed
signal used as the RF Carrier. The 3
sources are listed above.
TTL
5/2/2013
888-2500-001
WARNING: Disconnect primary power prior to servicing.
1 - 2Vpp
TTL
6-37
Section 6 Troubleshooting
Table 6-2
DAX-1/DAX-3
DAX Testpoint & LED Information Table
(All voltages listed are ±5%)
On Board...
Name
TP(n)
or
LED
Function, Display
and/or
(Comment) or (Related Potentiometer)
Nominal
Value
Exciter
Controller
RF SAMPLE
TP10
Set to 2Vpp at full power - 95%
modulation (R25)
2Vpp
Exciter
Controller
CLK 4FC
TP11
Clock 4x carrier frequency - Master
sampling clock used to drive all the
A/Ds and the PDM D/A
TTL
Exciter
Controller
PDM1
TP12
PDM Sample 1 - Analog sample of the
modulation filter from the power
amplifier modules on motherboard #1
Exciter
Controller
PDM ANLG
TP13
Set to 2Vpp at full power 95%
modulation, will have 1Vdc offset
(R32)
2Vpp
Exciter
Controller
PDM/RF
SAMPLE
TP14
PDM/RF Sample - Multiplexed signal
drives the Sample A/D converter.
2Vpp
Exciter
Controller
+VS PDM
TP15
Positive Supply voltage for the PDM
integrator. 10nS pulse width will
equate to: +VS_PDM = [(ePDM
Frequency - 150kHz) * 40mV] + 6V
See
formula
Exciter
Controller
PDM2
TP16
PDM Sample 2 - Analog sample of the
modulation filter from the power
amplifier modules on motherboard #2
Varies w/
number of
amps on
Exciter
Controller
PDM ANLG
TP18
Precorrected Audio + DC analog signal
(modulation dependent)
5Vpp
max
Exciter
Controller
PDM TTL
TP19
10 nS PDM on time (measured with
power off)
TTL
Exciter
Controller
PDM INV TTL
TP21
Inverse and delayed version of the
PDM TTL signal used to drive the
tailbiter circuit in the PAs
TTL
Exciter
Controller
AUDIO
TP22
Set Audio Gain pot to get 95%
modulation at 10 dBm input (~1.44V)
(R39/R37)
0 - 2Vdc
Exciter
Controller
B+
TP24
Scaled version of the B+ power supply.
This signal drives the B+ A/D used for
power supply correction.
0 - 2Vdc
6-38
888-2500-001
WARNING: Disconnect primary power prior to servicing.
Varies w/
number of
amps on
5/2/2013
Section 6 Troubleshooting
DAX-1/DAX-3
Table 6-2
DAX Testpoint & LED Information Table
(All voltages listed are ±5%)
On Board...
Name
TP(n)
or
LED
Function, Display
and/or
(Comment) or (Related Potentiometer)
Nominal
Value
Exciter
Controller
PA BRIDGE
MUTED A
TP25
TTL
Exciter
Controller
PA BRIDGE
MUTED B
TP26
These Bridge signals will be inactive if
a mute condition exists which could
cause the RF Bridge signals to be off
frequency
Exciter
Controller
PA BRIDGE
ACTIVE A
TP27
Monitor of Bridge signals to PA (65nS
(+/- 3 nS) dead time between A/B)
TTL
Exciter
Controller
PA BRIDGE
ACTIVE B
TP28
(R45)
Exciter
Controller
+VS DTG
TP29
Sets Dead Time Generator Voltage 1V per 100 kHz of Carrier (R43)
See
formula
Exciter
Controller
RFL POWER
TP30
400W reflected power foldback point
(R56)
04.095Vdc
Exciter
Controller
MUTE
DS2
Red LED illuminates to indicate DAX
transmitter is in a Mute condition
PA Module
PDM_DRIVE
TP2
PDM drive level
TTL
PA Module
PDM_INV
TP3
PDM inverted drive level
TTL
PA Module
PA ON/OFF
TP4
PA on command indicated by
steady-state active low
Low
PA Module
5.25V
TP5
Onboard regulation - IC
PA Module
BRIDGE_A
TP6
Bridge A present
TTL
PA Module
MODULATOR
_FAULT
TP8
Modulator fault indication with
steady-state active high
High
PA Module
BRIDGE_FAULT
TP9
Bridge fault indication with steadystate active high
High
PA Module
+12V
TP11
Input from LVPS
PA Module
PA_READY
TP12
PA is enabled for use indication with
steady-state active high
High
PA Module
BRIDGE_B
TP13
Bridge B present
TTL
PA Module
TEMP
TP15
Temperature fault indication with
steady-state active high
5/2/2013
888-2500-001
WARNING: Disconnect primary power prior to servicing.
5.25Vdc
+12.0Vdc
Fault =
High
6-39
Section 6 Troubleshooting
Table 6-2
On Board...
DAX-1/DAX-3
DAX Testpoint & LED Information Table
(All voltages listed are ±5%)
Name
TP(n)
or
LED
Function, Display
and/or
(Comment) or (Related Potentiometer)
Nominal
Value
PA Module
OVERLAP
TP16
Deadband overlap fault indicated
Fault =
High
PA Module
HIGH_DRV
TP17
Chopper high drive level
0-60Vdc
PA Module
LOW_DRV
TP18
Chopper low drive level
0-12Vdc
PA Module
+VC
TP19
Floating supply
>9Vdc
PA Module
+VB
TP20
Floating supply
>9Vdc
PA Module
V_PULSE_XFMR
TP21
Pulse transformer voltage level
4.8Vdc
PA Module
-VC
TP22
Floating supply
>9Vdc
PA Module
+VA
TP23
Floating supply
>9Vdc
PA Module
-VA
TP24
Floating supply
>9Vdc
PA Module
-VB
TP25
Floating supply
>9Vdc
PA Module
PA ON
DS1
PA On = green LED
Key Inserted = Amber
PA Fault = red LED
(on front of PA module)
TP1
Testpoint to tune for null at test
DS1
Red LED illuminates to indicate Test
mode
PA FAULT
Output
Monitor
TEST
Lowest
possible
Vdc value
1-phase PS
Controller
FILTERED
AC SAMPLE
TP2
Filtered AC sample
1-phase PS
Controller
AC SAMPLE
TP3
Input AC sample from transformer
secondary
1-phase PS
Controller
DC CURRENT
SAMPLE
TP4
DC representation of current
1-phase PS
Controller
FAN DRIVE
TP5
Active when PAs are on
+48Vdc
1-phase PS
Controller
+48V
TP6
Input from +48V power supply
+48Vdc
1-phase PS
Controller
+12V
TP7
Input from +12V power supply
+12Vdc
6-40
888-2500-001
WARNING: Disconnect primary power prior to servicing.
5.5VAC
7VAC
0.0 - +1.6
Vdc
5/2/2013
Section 6 Troubleshooting
DAX-1/DAX-3
Table 6-2
On Board...
DAX Testpoint & LED Information Table
(All voltages listed are ±5%)
Name
TP(n)
or
LED
Function, Display
and/or
(Comment) or (Related Potentiometer)
Nominal
Value
1-phase PS
Controller
-12V
TP8
From onboard switching supply
-12Vdc
1-phase PS
Controller
+5V
TP9
Onboard regulation - IC
+5Vdc
1-phase PS
Controller
XFMR
SECONDARY
SAMPLE
TP11
TP12
Transformer secondary low tap
sample. Measured across TP11 and
TP12.
240VAC
1-phase PS
Controller
VOLTAGE
FEEDBACK
TP13
Virtual Tap selection reference voltage
2 - 3Vdc
1-phase PS
Controller
B+ SAMPLE
TP20
B+ sample
80 - 300
Vdc
B+ VOLTAGE
PRESENT
DS3
Blinking Red LED to indicate B+
power supply is present
1-phase PS
Controller
RECTIFIER
OVERTEMP
TP14
Over-temperature fault from rectifier
indicated by steady-state active low
Fault =
0Vdc
1-phase PS
Controller
TRANSFORMER
OVERTEMP
TP15
Over-temperature fault from
transformer indicated by steady-state
active low
Fault =
0Vdc
1-phase PS
Controller
CURRENT
SHUNT
TP16
TP17
Negative and positive Current Shunt
inputs
0 - 30mV
1-phase PS
Controller
SIGNAL HIGH
TP18
Variable reference control loop voltage
0 - 12Vdc
1-phase PS
Controller
PS WARNING
DS1
Red LED illuminates to indicate blown
discharge fuse.
WARNING:
THIS INDICATES THE
POSSIBILITY OF HIGH VOLTAGE
REMAINING IN CABINET WHEN
DAX IS TURNED OFF!
1-phase PS
Controller
5/2/2013
PS OVERTEMP
DS2
Red LED illuminates to indicate Power
Supply over-temperature fault
888-2500-001
WARNING: Disconnect primary power prior to servicing.
6-41
Section 6 Troubleshooting
6-42
888-2500-001
WARNING: Disconnect primary power prior to servicing.
DAX-1/DAX-3
5/2/2013
DAX-1/DAX-3
Section 7
Parts List
7.1
Table 7-1
Table 7-2
Table 7-3
Table 7-4
Table 7-5
Table 7-6
Table 7-7
Table 7-8
Table 7-9
Table 7-10
Table 7-11
Table 7-12
Table 7-13
Table 7-14
Table 7-15
Table 7-16
Table 7-17
Table 7-18
Table 7-19
Table 7-20
Table 7-21
Table 7-22
Table 7-23
Table 7-24
Table 7-25
5/2/13
7
Replaceable Parts List Index
!FORMAT XMTR, AM DAX-1/1R/3 - - - KIT, 1KW, SINGLE PA, PS, 50HZ - - - - PWA, RF MODULE, TESTED - - - - - - PWA, PA MODULE - - - - - - - - - - - PWA, MOTHERBOARD, 1KW - - - - - PS ASSY, 50HZ, DAX 1KW - - - - - - - PWA, MOV-AC 391-430 VAC- - - - - - PWA, 1-PHASE SCR RECTIFIER - - - - *PWA, PS CONTROLLER, 1-PH - - - - KIT, 1KW, REDUND, PS, 50HZ - - - - - PWA, 1 KW MOTHERBOARD, DUAL PA PWA, RELAY MODULE - - - - - - - - KIT, 3KW, PA, PS, 50HZ - - - - - - - - - PS ASSY, 50HZ, DAX 3KW - - - - - - - PWA, MOTHERBOARD, 3KW - - - - - BASIC, DAX-1/1R/3 AM XMTR - - - - - PWA, EXCITER/CONTROLLER- - - - - *PWA, EXTERNAL I/O - - - - - - - - - PWA, OUTPUT MONITOR - - - - - - - PWA, RF SAMPLE DIVIDER - - - - - - KIT, 1KW, SINGLE PA,PS, 60HZ- - - - - PS ASSY, 60HZ, DAX 1KW - - - - - - - KIT, 1KW, REDUND, PS, 60HZ - - - - - KIT, 3KW, PA, PS, 60HZ - - - - - - - - - PS ASSY, 60HZ, DAX 3KW - - - - - - - -
994 9823 001 (S)
200000000000001765 (D)
9929994009T (A1)
992 9994 009 (AE)
992 9994 060 (F)
992 9994 066 (S)
992 8553 012 (D--)
992 9994 013 (D-)
992 9994 020 (P)
200000000000001766 (E)
200000000000001021 (D)
200000000000001067 (B)
200000000000001767 (E)
992 9994 067 (U)
992 9994 072 (D)
992 9994 065 (AG)
992 9994 005 (K)
992 9994 016 (K-)
992 9994 030 (K-)
992 9994 106 (B-)
992 9994 113 (H)
200000000000001768 (J)
992 9994 114 (L)
992 9994 115 (G)
200000000000001769 (L)
888-2500-001
WARNING: Disconnect primary power prior to servicing.
7-2
7-3
7-3
7-3
7-4
7-4
7-5
7-5
7-5
7-7
7-7
7-8
7-8
7-9
7-9
7-10
7-11
7-11
7-12
7-12
7-13
7-13
7-13
7-14
7-14
7-1
Section 7 Parts List
DAX-1/DAX-3
Table 7-1 !FORMAT XMTR, AM DAX-1/1R/3 - 994 9823 001 (S)
Harris PN
200000000000001704
200000000000001705
200000000000001706
200000000000001707
200000000000001708
200000000000001709
200000000000001710
200000000000001711
200000000000001712
200000000000001713
200000000000001714
200000000000001715
200000000000001716
200000000000001717
200000000000001718
200000000000001719
200000000000001720
200000000000001721
200000000000001722
200000000000001723
200000000000001724
200000000000001725
200000000000001726
200000000000001765
200000000000001766
200000000000001767
200000000000001774
200000000000001775
200000000000001776
200000000000001777
200000000000001778
200000000000001783
981 0065 001
988 2500 002
990 1184 001
990 1184 002
990 1184 003
990 1184 004
990 1184 005
990 1184 101
992 7285 077
992 9511 782
992 9994 065
992 9994 081
992 9994 082
992 9994 083
992 9994 084
992 9994 085
992 9994 086
992 9994 087
992 9994 088
992 9994 089
992 9994 090
992 9994 091
992 9994 092
992 9994 093
992 9994 094
992 9994 095
992 9994 096
992 9994 097
992 9994 098
992 9994 099
992 9994 100
992 9994 101
992 9994 102
992 9994 103
992 9994 113
992 9994 114
7-2
Description
Qty UM Reference Designators
FD PARTS 3KW, 530KHZ - 557KHZ
0 EA
FD PARTS 3KW, 558KHZ - 586KHZ
0 EA
FD PARTS 3KW, 587KHZ - 617KHZ
0 EA
FD PARTS 3KW, 618KHZ - 650KHZ
0 EA
FD PARTS 3KW, 651KHZ - 684KHZ
0 EA
FD PARTS 3KW, 685KHZ - 720KHZ
0 EA
FD PARTS 3KW, 721KHZ - 758KHZ
0 EA
FD PARTS 3KW, 759KHZ
0 EA
FD PARTS 3KW, 799KHZ - 840KHZ
0 EA
FD PARTS 3KW, 841KHZ - 884KHZ
0 EA
FD PARTS 3KW, 885KHZ - 930KHZ
0 EA
FD PARTS 3KW, 931KHZ - 978KHZ
0 EA
FD PARTS 3KW, 979KHZ - 1029KHZ
0 EA
FD PARTS 3KW,1030KHZ - 1083KHZ
0 EA
FD PARTS 3KW,1084KHZ - 1109KHZ
0 EA
FD PARTS 3KW,1140KHZ - 1198KHZ
0 EA
FD PARTS 3KW,1199KHZ - 1260KHZ
0 EA
FD PARTS 3KW,1261KHZ - 1325KHZ
0 EA
FD PARTS 3KW,1326KHZ - 1394KHZ
0 EA
FD PARTS 3KW,1395KHZ - 1466KHZ
0 EA
FD PARTS 3KW,1467KHZ - 1542KHZ
0 EA
FD PARTS 3KW,1543KHZ - 1622KHZ
0 EA
FD PARTS 3KW,1623KHZ - 1706KHZ
0 EA
KIT, 1KW, SINGLE PA, PS, 50HZ
0 EA
KIT, 1KW, REDUND, PS, 50HZ
0 EA
KIT, 3KW, PA, PS, 50HZ
0 EA
FD PARTS, 1KW 760KHZ - 798KHZ
0 EA
FD PARTS, 1KW 1110KHZ -1139KHZ
0 EA
FD PARTS, 1KW 1400KHZ -1466KHZ
0 EA
FD PARTS 3KW, 760KHZ - 798KHZ
0 EA
FD PARTS 3KW,1110KHZ - 1139KHZ
0 EA
DP, XMTR, DAX-1R
0 EA
*MOD MON BOOST TRANSFORMER 0 EA
DP, XMTR, DAX-1/3
0 EA
KIT, SPARE BOARDS, DAX-1
0 EA
KIT,SPARE BOARDS, DAX-1R
0 EA
KIT, SPARE BOARDS, DAX-3
0 EA
KIT, SPARE PARTS, DAX-1/3
0 EA
KIT, SPARE FUSE & SEMI DAX-3
0 EA
KIT, SPARE FUSE, DAX-3
0 EA
OPTION, DAX1 - DAX6 AMC+/ACC+ FACTORY INSTALLED0 EA
*KIT, DAX IBOC
0 EA
BASIC, DAX-1/1R/3 AM XMTR
1 EA
FD PARTS 1KW 530KHZ - 557KHZ
0 EA
FD PARTS, 1KW 558KHZ - 586KHZ
0 EA
FD PARTS, 1KW 587KHZ - 617KHZ
0 EA
FD PARTS, 1KW 618KHZ - 650KHZ
0 EA
FD PARTS, 1KW 651KHZ - 684KHZ
0 EA
FD PARTS, 1KW 685KHZ - 720KHZ
0 EA
FD PARTS, 1KW 721KHZ - 758KHZ
0 EA
FD PARTS, 1KW 759KHZ
0 EA
FD PARTS, 1KW 799KHZ - 840KHZ
0 EA
FD PARTS, 1KW 841KHZ - 884KHZ
0 EA
FD PARTS, 1KW 885KHZ - 930KHZ
0 EA
FD PARTS, 1KW 931KHZ - 978KHZ
0 EA
FD PARTS, 1KW 979KHZ - 1029KHZ
0 EA
FD PARTS, 1KW 1030KHZ -1083KHZ
0 EA
FD PARTS, 1KW 1084KHZ -1109KHZ
0 EA
FD PARTS, 1KW 1140KHZ -1198KHZ
0 EA
FD PARTS, 1KW 1199KHZ -1260KHZ
0 EA
FD PARTS, 1KW 1261KHZ -1325KHZ
0 EA
FD PARTS, 1KW 1326KHZ -1394KHZ
0 EA
FD PARTS, 1KW 1395KHZ -1399KHZ
0 EA
FD PARTS, 1KW 1467KHZ - 542KHZ
0 EA
FD PARTS, 1KW 1543KHZ -1622KHZ
0 EA
FD PARTS, 1KW 1623KHZ -1706KHZ
0 EA
KIT, 1KW, SINGLE PA,PS, 60HZ
0 EA
KIT, 1KW, REDUND, PS, 60HZ
0 EA
888-2500-001
WARNING: Disconnect primary power prior to servicing.
5/2/13
Section 7 Parts List
DAX-1/DAX-3
992 9994 115
992 9994 127
992 9994 130
992 9994 132
992 9994 133
992 9994 138
KIT, 3KW, PA, PS, 60HZ
KIT,RACK DAX 1/1R/3
KIT, SPARE FUSE & SEMI DAX-1/1R
KIT, DAX FREQUENCY CHANGE, 1KW
KIT, DAX FREQUENCY CHANGE, 3KW
KIT, SPARE FUSE, DAX-1/1R
0 EA
0 EA
0 EA
0 EA
0 EA
0 EA
Table 7-2 KIT, 1KW, SINGLE PA, PS, 50HZ - 200000000000001765 (D)
Harris PN
472 1834 000
612 0233 000
917 2574 059
939 8234 041
939 8234 059
943 5573 047
943 5573 089
9929994009T
992 9994 060
992 9994 066
Description
XFMR, 220V PRI, 2.2KW, 1-PHASE
JACK, N-TYPE STRAIGHT FLANGE
COMBINER CABLE, DAX 1K
PLATE, AIR BLOCK
PLATE, RF OUT, 1KW
BLANK PANEL, PA
BOTTOM PLATE, 1KW
PWA, RF MODULE, TESTED
PWA, MOTHERBOARD, 1KW
PS ASSY, 50HZ, DAX 1KW
Qty UM
1 EA
1 EA
1 EA
2 EA
1 EA
2 EA
1 EA
1 EA
1 EA
1 EA
Reference Designators
A11T1
PA1
A3A2
Table 7-3 PWA, RF MODULE, TESTED - 9929994009T (A1)
Harris PN
302 0374 000
358 3837 000
646 0665 000
943 5573 002
992 9994 009
Description
SCREW, FHMS UC 6-32 X 3/8 SST
CARD GUIDE, SNAP-IN
LABEL, INSPECTION
COVER, PA MODULE
PWA, PA MODULE
Harris PN
000 0000 010
250 0557 000
300 1484 000
300 1486 000
302 0104 000
302 0105 000
302 0106 000
Description
B/M NOTE:
LED INTERCONNECT LEADS
SCREW, PHMS 4-40 X 1/4 BRASS
SCREW, PHMS 4-40 X 3/8 BRASS
SCREW, PPHMS 6-32 X 1/4
SCR, 6-32 X 5/16
SCR, 6-32 X 3/8
302 0108 000
302 0374 000
304 0087 000
310 0012 000
312 0045 000
314 0005 000
328 0074 000
SCR, 6-32 X 1/2
7 EA
SCREW, FHMS UC 6-32 X 3/8 SST
4 EA
NUT, HEX 4-40
5 EA
WASHER, FLAT #6 SST (ANSI NARROW)7 EA
LOCKWASHER, SPLIT #4 PH-BRZ (ANSI)5 EA
LOCKWASHER, SPLIT #6 SST (ANSI)
8 EA
WASHER, BELLEVILLE 0.153 ID, STEEL 12 EA
335 0292 000
380 0653 000
380 0804 000
SPACER, NYLON, LED MOUNTING
XSTR, NPN MPS6602 ESD
*N-MOSFET IRFP22N50A ESD
1 EA
2 EA
10 EA
380 0830 000
382 1647 000
382 1654 000
384 0808 000
384 1154 000
398 0556 000
402 0194 000
404 0513 000
404 0908 000
404 0926 000
406 0539 000
410 0446 000
N-MOSFET IRFP450A ESD
IC UC3710T ESD
IC TC622EAT
ESD
LED, RED/GRN T1-3/4 VERT
DIODE, RECT, 30EPH06 ESD
FUSE, FAST 8 AMP 600V
FUSE CLIP, 13/32'', 30 AMP, PCB MT
HEAT SINK PA1-1CB
*HEATSINK, VERTICAL, TO-220
HEATSINK, PA
CLIP, MOUNTING, LED LENS,CLEAR
THERMAL INTERFACE, TO-247
1 EA
6 EA
1 EA
1 EA
2 EA
1 EA
2 EA
1 EA
4 EA
1 EA
1 EA
11 EA
414 0280 000
414 0343 000
414 0347 000
FERRITE TOROID, LINER
FERRITE TOROID, 0.155 OD
CORE, TOROID, 4.14 MM OD
2 EA
2 EA
16 EA
478 0474 000
XFMR, RF, 1:1 5.5AMP
4 EA
Table 7-4
5/2/13
Qty UM Reference Designators
4 EA
6 EA
1 EA
1 EA
1 EA
PWA, PA MODULE - 992 9994 009 (AE)
Qty UM
3 DWG
1 EA
4 EA
1 EA
1 EA
1 EA
11 EA
Reference Designators
C34 L4 R69
LED ASSY
XU24 XU25 XU26 XU27
1/XQ12
LED BRACKET
1/U30
1/CR80 1/Q13 1/Q14 1/Q15 1/Q16 1/Q17 1/
Q18 1/Q19 1/Q20 1/Q21 1/Q22
7/PCB
4/HEATSINK
XQ12 XU24 XU25 XU26 XU27
7/PCB
XQ12 XU24 XU25 XU26 XU27
1/LED BRACKET,7/PCB
CR80 Q13 Q14 Q15 Q16 Q17 Q18 Q19 Q20
Q21 Q22 U30
LED ASSY
Q8 Q9
Q13 Q14 Q15 Q16 Q17 Q18 Q19 Q20 Q21
Q22
Q12
U24 U25 U26 U27 U28 U29
U30
LED ASSY
CR14 CR80
F1
2/F1
XQ12
XU24 XU25 XU26 XU27
LED ASSY
CR80 Q13 Q14 Q15 Q16 Q17 Q18 Q19 Q20
Q21 Q22
G/Q13 G/Q22
D/Q13 D/Q22
D/Q14 D/Q15 D/Q16 D/Q17 D/Q18 D/Q19 D/
Q20 D/Q21 G/Q14 G/Q15 G/Q16 G/Q17 G/
Q18 G/Q19 G/Q20 G/Q21
L11 L12 L14 L15
888-2500-001
WARNING: Disconnect primary power prior to servicing.
7-3
Section 7 Parts List
506 0308 000
506 0309 000
506 0311 000
506 0316 000
508 0717 000
516 0081 000
522 0658 000
560 0121 007
574 0543 000
604 0852 000
610 1334 000
610 1372 000
610 1498 000
646 2110 000
843 5572 001
922 1310 001
922 1344 004
922 1344 005
922 1344 006
943 5573 001
943 5573 132
992 9994 010
CAP 0.180UF 5% 630VDC
CAP 0.220UF 5% 630VDC
CAP 0.033UF 5% 1000VDC
CAP 0.068UF 400V 5%
CAP, 0.15UF 600VDC 10%
CAP, DISC 0.01UF 1KV 20%
CAP, 220UF 400V 20%, SNAP-MT
POSISTOR 0.5 AMP 60VDC 8MM DISC
RELAY, SPDT 12VDC 20A/10A
SW, RKR DIP 4-SPST
HDR, 3C VERT 1ROW 1-WALL
JUMPER 4.0" LG 0.175"H
JUMPER, 7.75" LG, 0.175" TAILS
BARCODE, SN_ITEM_REV
SCH, PA MODULE
TRANSFORMER, ISOLATION
INDUCTOR ASSY
INDUCTOR ASSY
BRACKET, LED
BASE PLATE, PA MODULE
MTG, PA AIR GUIDE
*PWA, PA MODULE, SMT
DAX-1/DAX-3
2 EA
3 EA
2 EA
2 EA
1 EA
1 EA
5 EA
1 EA
1 EA
1 EA
1 EA
1 EA
1 EA
1 EA
0 DWG
2 EA
4 EA
1 EA
1 EA
1 EA
1 EA
1 EA
C63 C65
C34 C66 C119
C31 C68
C106 C107
C46
C35
C58 C64 C71 C79 C97
R25
K1
S1
J1
JP2
JP1
L20 L21
L8 L9 L16 L17
L6
Table 7-5 PWA, MOTHERBOARD, 1KW - 992 9994 060 (F)
Harris PN
302 0108 000
310 0012 000
314 0005 000
314 0007 000
335 0059 000
335 0236 000
354 0819 000
354 0905 000
358 3861 001
522 0528 000
522 0567 000
524 0381 000
548 2400 201
560 0121 011
610 0900 000
610 0982 000
610 1043 000
610 1334 000
610 1411 002
612 1184 000
612 2128 000
612 2139 002
620 0700 000
646 2110 000
843 5572 121
843 5572 123
922 1344 007
922 1344 039
Description
Qty UM
SCR, 6-32 X 1/2
2 EA
WASHER, FLAT #6 SST (ANSI NARROW)2 EA
LOCKWASHER, SPLIT #6 SST (ANSI)
2 EA
LOCKWASHER, SPLIT #10 SST (ANSI) 2 EA
WASHER FLAT NYLON #6 HOLE
2 EA
WASHER SHOULDER 0.141 ID NYLON 2 EA
LUG QC250 MALE PCB VERTICAL
1 EA
TERMINAL, SCREW 10-32 30A
2 EA
POST, SLIDE LOCK ASSY, 4-40
2 EA
CAP 470UF 63V 20%
1 EA
CAP 8200UF 16V 20% SNAP-MT
1 EA
CAP 470UF 400V 20% SNAP-MT
7 EA
RES 100 OHM 1/2W 1%
5 EA
POSISTOR 1.1 AMP 60VDC 13MM DISC 2 EA
HDR, 3C VERT 1ROW UNSHR
4 EA
*HDR 26C 2ROW VERT TOP LATCH
1 EA
*HDR 40C 2ROW VERT TOP LATCH
1 EA
HDR, 3C VERT 1ROW 1-WALL
2 EA
PLUG, D STRT 15C PCB
1 EA
JUMPER SHUNT, 2C, 0.1'' PITCH
4 EA
RECP, EDGECARD 36 POS
1 EA
RECP, D STRT 15C PCB
1 EA
JACK RECP, SMB PCB MT VERTICAL 2 EA
BARCODE, SN_ITEM_REV
1 EA
SCH, MOTHERBOARD
0 DWG
PWB, MOTHERBOARD
1 EA
TRANSFORMER
1 EA
EXTENSION, SCREW TERMINAL
1 EA
Harris PN
200000000000000023
200000000000000956
200000000000001521
358 0003 000
358 3614 000
358 3845 000
384 0705 000
384 1171 000
398 0625 000
476 0442 000
540 1600 201
542 1738 000
610 1253 000
612 1451 000
Description
CB, 3 POLE, 15 AMP 277/480VAC
STANDOFF
COVER, PS CONTROLLER
BRACKET RESISTOR MTG
STANDOFF, 6-32 X 1-1/8
SPACER, .500" DIA X .375" LG
RECT, 85HF100 (DO203)
SCR, ST180S12P0V
FUSE, FAST 10A 600V
*IND, TOROIDAL, 62MH 14.5ADC
RES 100 OHM 3W 5%
RES, 100 OHM 100W 10%
PLUG, MALE 4C 1ROW STRAIGHT
PLUG, FEMALE 4C 1ROW STRAIGHT
Reference Designators
#T1
#T1
#T1
#E3 #E4
#T1
#T1
J11
E3 E4
#J3 #J4
C12
C8
C7 C9 C10 C11 C13 C14 C15
R6 R7 R8 R9 R10
R4 R11
JP1 JP2 JP3 JP4
J2
J1
J5 J6
J4
1/JP1 1/JP2 1/JP3 1/JP4
XA1J1
J3
J8 J9
T1
#E3
Table 7-6 PS ASSY, 50HZ, DAX 1KW - 992 9994 066 (S)
7-4
Qty UM
1 EA
1 EA
1 EA
2 EA
2 EA
2 EA
1 EA
1 EA
1 EA
1 EA
1 EA
1 EA
1 EA
1 EA
Reference Designators
CB1
#L1
#PS CONT COVER
CR39
F5
L1
R2
R1
J2P2
J2P2
888-2500-001
WARNING: Disconnect primary power prior to servicing.
5/2/13
Section 7 Parts List
DAX-1/DAX-3
735 0041 001
736 0376 001
736 0377 001
917 2574 020
917 2574 021
922 1344 030
922 1344 031
922 1344 046
939 8234 039
939 8234 056
939 8234 063
943 5573 083
943 5573 084
943 5573 085
943 5573 125
943 5573 152
952 9234 008
992 8553 012
992 9994 013
992 9994 020
FIRING BD, 1-PH RECT, 50HZ
PSU, SW, 240W +12VDC
PSU, SW, 240W +48VDC
PWR SUPPLY AC CABLE
CABLE, PWR SUPPLY CONTROL
BLOCK, TERMINAL
STUD
SPACER
MOUNTING BRACKET
BRACKET, CIRCUIT BREAKER
BRACKET, CROWBAR
BRACKET, LVPS
PS MOUNTING BRACKET
COVER, CIRCUIT BREAKER
ADAPTER STANDOFF 1/4-20 TO 1/4-28
SHOULDER WASHER
CHASSIS, POWER SUPPLY
PWA, MOV-AC 391-430 VAC
PWA, 1-PHASE SCR RECTIFIER
*PWA, PS CONTROLLER, 1-PH
Table 7-7
Harris PN
2960345000A
560 0024 000
560 0112 000
560 0116 000
610 1066 000
646 2110 000
839 8115 031
839 8115 033
Table 7-8
Qty UM
1 FT
2 EA
8 EA
2 EA
3 EA
1 EA
0 DWG
1 EA
A13
A16
A17
Reference Designators
RV3 RV4
RV5 RV6 RV8 RV9 RV10 RV11 RV12 RV13
RV1 RV2
A,B,C
Reference Designators
1/CR1 1/CR2 1/CR3 1/Q1 1/Q2
1/CR1 1/CR2 1/CR3 1/Q1 1/Q2
1/CR1 1/CR2 1/CR3 1/Q1 1/Q2
E1 E2 E3 E4
CR1 CR2 CR3
Q1 Q2
XCR1 XCR2 XCR3 XQ1 XQ2
1/CR1 1/CR2 1/CR3 1/Q1 1/Q2
S1
C1 C2
R2 R3
R1
J1
*PWA, PS CONTROLLER, 1-PH - 992 9994 020 (P)
Harris PN
055 0100 005
200000000000000006
300 1536 000
300 1538 000
304 0089 000
312 0047 000
350 0105 000
354 0309 000
Description
Qty UM
*THERMAL COMPOUND, 8OZ JAR
0 EA
XFMR, PWR, 14VCT, 1.6VA PC MT
1 EA
SCR, 6-32 X 1/4
3 EA
SCR, 6-32 X 3/8
1 EA
NUT, HEX 6-32
4 EA
LOCKWASHER, SPLIT #6 PH-BRZ (ANSI)4 EA
RIVET 3/16 ALUM .126/.25
8 EA
TERM SOLDER
21 EA
354 0905 000
358 3861 001
380 0645 000
380 0773 000
380 0804 000
380 0825 000
TERMINAL, SCREW 10-32 30A
POST, SLIDE LOCK ASSY, 4-40
XSTR, IRF530 ESD
XSTR, N-MOSFET BS170 (TO-92)
*N-MOSFET IRFP22N50A ESD
XSTR, P-MOSFET, IRF5210 ESD
5/2/13
#CR39
PWA, 1-PHASE SCR RECTIFIER - 992 9994 013 (D-)
Description
Qty UM
SCR, 6-32 X 1/2
5 EA
NUT, HEX 6-32
5 EA
LOCKWASHER, SPLIT #6 PH-BRZ (ANSI)5 EA
TERMINAL, SCREW 10-32 30A
4 EA
RECT, 40EPS12 (TO247)
3 EA
SCR, 40TPS12A
ESD
2 EA
HEATSINK,TO-218/247 2.5"HT
5 EA
THERMAL INTERFACE, TO-247
5 EA
THERMOSTAT, 90C, SPST-N.O.
1 EA
CAP 0.027UF 5% 1400VDC
2 EA
RES, CERAMIC, 56 OHM, 2W, 10%
2 EA
RES 1.5 MILLIOHM 5W 1%
1 EA
HDR, 12C VERT 1ROW FRICTION
1 EA
BARCODE, SN_ITEM_REV
1 EA
SCH, 1-PHASE SCR RECTIFIER
0 DWG
PWB, 1-PHASE SCR RECTIFIER
1 EA
Table 7-9
A14
LVPS2
LVPS1
PWA, MOV-AC 391-430 VAC - 992 8553 012 (D--)
Description
*TUBING, SHRINKABLE 3/4
MOV, 175WVAC, 90J, 20MM DISC
MOV, 480WVAC, 180J, 20MM DISC
MOV, 320WVAC, 150J, 20MM DISC
LUG QC250 MALE PCB VERTICAL
BARCODE, SN_ITEM_REV
SCH, MOV-AC PROTECTOR
PWB, MOV-AC PROTECTOR,
Harris PN
300 1540 000
304 0089 000
312 0047 000
354 0905 000
384 1163 000
384 1164 000
404 0910 000
410 0446 000
442 0143 000
508 0605 000
546 0334 000
548 2361 000
610 1107 000
646 2110 000
843 5572 221
843 5572 223
1 EA
1 EA
1 EA
1 EA
1 EA
1 EA
2 EA
2 EA
1 EA
1 EA
1 EA
1 EA
1 EA
1 EA
1 EA
2 EA
1 EA
1 EA
1 EA
1 EA
3 EA
2 EA
1 EA
4 EA
1 EA
1 EA
Reference Designators
T1
1/Q1 1/Q3 1/U10
1/Q9
1/Q1 1/Q3 1/Q9 1/U10
1/Q1 1/Q3 1/Q9 1/U10
2/XF5 2/XF6 2/XF7 2/XF8
TP1 TP2 TP3 TP4 TP5 TP6 TP7 TP8 TP9 TP10
TP11 TP12 TP13 TP14 TP15 TP16 TP17 TP18
TP19 TP20 TP21
E1 E2 E3
2X/J2 2XJ3
Q6
Q2 Q4 Q7 Q8
Q9
Q5
888-2500-001
WARNING: Disconnect primary power prior to servicing.
7-5
Section 7 Parts List
DAX-1/DAX-3
380 0828 000
382 0184 000
382 0428 000
382 0463 000
382 0594 000
382 0656 000
382 0774 000
382 1070 000
382 1128 000
382 1218 000
382 1598 000
382 1649 000
382 1653 000
382 1708 000
384 0205 000
384 0253 000
384 0720 000
384 0780 000
384 0802 000
384 0803 000
384 0986 000
384 1159 000
386 0082 000
386 0083 000
386 0135 000
386 0148 000
386 0404 000
398 0087 000
398 0089 000
398 0368 000
398 0585 000
398 0598 000
398 0621 000
402 0129 000
402 0220 000
404 0904 000
404 0907 000
404 0908 000
410 0446 000
494 0218 000
494 0441 000
494 0514 000
506 0231 000
506 0232 000
506 0233 000
N-MOSFET, IRFB33N15D ESD
*IC, LM340A/LM7805AC (TO-220)
*IC, LM358 (DIP-8)
IC, 4051/14051 ESD
*IC TL074ACN ESD
IC, 7405 ESD
IC 74HC14 ESD
IC, ILQ1
IC OVR VOLT SEN MC3423 ESD
IC, LT1007A (DIP-8)
IC 74AC00
ESD
*IC, AD620
IC IR2113 ESD
IC, UC3825
ESD
*DIODE, RECT 1N4148/914
DIODE, RECT 1N4007
DIODE, TVS (UNIDIR), ICTE-15
LED, T1 RED VERTICAL
DIODE, TVS (BIDIR), P6KE18CA ESD
RECT MUR-120 200V ESD
LED, RED BLINKING, T-1-3/4 ESD
SCHOTTKY, 50SQ100 (TO204)
*ZENER 1N4744A 15V 5% 1W
*ZENER 1N4742A 12V 5% 1W
*ZENER 1N4733A 5.1V 5% 1W
*ZENER 1N4743A 13V 5% 1W
*ZENER 1N4758A 56V 5% 1W
FUSE, SLOW CART 5A 250V
FUSE, SLOW CART 7A 125V
FUSE, CART 2A 600V
FUSE, FAST 1.0A 250VAC RADIAL
FUSE, SLOW, 3AG, 15 AMP, 32V
FUSE, FAST 3A 600V
CLIP, 1/4 DIA FUSE
CLIP, FUSE 13/32 DIA
SOCKET, SIP 2C
HEATSINK TO-218/247 2.0" HT
*HEATSINK, VERTICAL, TO-220
THERMAL INTERFACE, TO-247
CHOKE, WIDE BAND 2.5 TURN
CHOKE RF PWR 82UH 4.8A
IND, 1.0MH 15% 5 AMP
CAP 1500PF 5% 63V
CAP 0.010UF 5% 100V
CAP 0.100UF 5% 63V
2 EA
1 EA
1 EA
1 EA
1 EA
1 EA
1 EA
1 EA
2 EA
1 EA
1 EA
1 EA
1 EA
1 EA
4 EA
1 EA
3 EA
2 EA
1 EA
1 EA
1 EA
4 EA
2 EA
4 EA
8 EA
4 EA
1 EA
2 EA
1 EA
1 EA
1 EA
1 EA
1 EA
8 EA
8 EA
1 EA
1 EA
3 EA
1 EA
1 EA
1 EA
1 EA
1 EA
4 EA
36 EA
506 0236 000
506 0240 000
506 0242 000
506 0244 000
506 0309 000
516 0084 000
516 0516 000
CAP 4700PF 5% 100V
CAP 0.033UF 5% 100V
CAP 0.068UF 5% 63V
CAP 0.220UF 5% 63V
CAP 0.220UF 5% 630VDC
CAP, 0.020UF 500V -20/+80%
CAP 1UF 100V 20%
1 EA
1 EA
1 EA
3 EA
2 EA
1 EA
11 EA
516 0530 000
516 0725 000
CAP 0.010UF 10% 100V X7R
CAP 1.0UF 50V 20%
2 EA
15 EA
516 0771 000
516 0974 000
522 0545 000
522 0548 000
522 0554 000
522 0590 000
522 0592 000
522 0656 000
540 1600 103
540 1600 118
540 1600 201
540 1600 401
540 1600 408
CAP 33PF 5% 100V C0G
CAP 1000PF 5% 100V C0G
CAP 10UF 100V 20% (6.3X11)
CAP 10UF 50V 20% (5X11)
CAP 4.7UF 50V 20%
CAP 470UF 25V 20%
<*>CAP 100UF 35V 20% (6.3X11)
CAP 330 UF 25V 20%
RES 12 OHM 3W 5%
RES 51 OHM 3W 5%
RES 100 OHM 3W 5%
RES 10K OHM 3W 5%
RES 20K OHM 3W 5%
1 EA
4 EA
3 EA
1 EA
1 EA
4 EA
1 EA
3 EA
1 EA
2 EA
1 EA
3 EA
1 EA
7-6
Q1 Q3
U10
U9
U1
U11
U5
U6
U13
U12 U14
U4
U7
U2
U8
U3
CR15 CR17 CR21 CR34
CR26
CR22 CR23 CR36
DS1 DS2
CR14
CR16
DS3
CR27 CR28 CR29 CR30
CR31 CR33
CR1 CR2 CR12 CR13
CR6 CR7 CR9 CR10 CR18 CR19 CR20 CR24
CR8 CR35 CR37 CR38
CR25
F1 F2
F9
F6
F3
F4
F7
2/XF1 2/XF2 2/XF4 2/XF9
2/XF5 2/XF6 2/XF7 2/XF8
1/XF3
XQ9
XQ1 XQ3 XU10
XQ9
RFC1
L2
L1
C44
C2 C28 C70 C75
C1 C3 C5 C6 C7 C11 C18 C20 C23 C24 C26
C27 C30 C35 C46 C49 C50 C54 C55 C57 C59
C64 C66 C72 C73 C74 C76 C77 C79 C80 C81
C82 C83 C84 C88 C89
C47
C36
C48
C10 C14 C17
C86 C87
C78
C9 C12 C13 C15 C16 C21 C22 C31 C32 C38
C42
C95 C96
C4 C25 C29 C33 C34 C37 C39 C41 C45 C53
C56 C63 C65 C67 C68
C40
C91 C92 C93 C94
C71 C85 C90
C61
C19
C8 C43 C52 C60
C51
C58 C62 C69
R73
R46 R52
R74
R57 R62 R67
R80
888-2500-001
WARNING: Disconnect primary power prior to servicing.
5/2/13
Section 7 Parts List
DAX-1/DAX-3
540 1600 418
540 1600 501
546 0313 000
548 0345 000
548 2346 000
548 2347 000
548 2351 000
548 2360 000
548 2400 001
548 2400 101
548 2400 134
548 2400 137
548 2400 201
548 2400 247
548 2400 301
548 2400 305
548 2400 330
548 2400 332
548 2400 337
548 2400 339
548 2400 347
548 2400 359
548 2400 361
548 2400 385
548 2400 401
RES 51K OHM 3W 5%
RES 100K OHM 3W 5%
RES 50 OHM 5W 5%
RES 15K OHM 7W 1%
RES 68.1K OHM 3W 1%
RES 110K OHM 3W 1%
RES, 301K OHM 3/4W 0.1%
RES, 2.5K OHM 1/8W 0.1 %
RES 1 OHM 1/2W 1%
RES 10 OHM 1/2W 1%
RES 22.1 OHM 1/2W 1%
RES 23.7 OHM 1/2W 1%
RES 100 OHM 1/2W 1%
RES 301 OHM 1/2W 1%
RES 1K OHM 1/2W 1%
RES 1.1K OHM 1/2W 1%
RES 2K OHM 1/2W 1%
RES 2.1K OHM 1/2W 1%
RES 2.37K OHM 1/2W 1%
RES 2.49K OHM 1/2W 1%
RES 3.01K OHM 1/2W 1%
RES 4.02K OHM 1/2W 1%
RES 4.22K OHM 1/2W 1%
RES 7.5K OHM 1/2W 1%
RES 10K OHM 1/2W 1%
1 EA
2 EA
1 EA
1 EA
1 EA
1 EA
6 EA
2 EA
2 EA
6 EA
1 EA
1 EA
9 EA
1 EA
6 EA
1 EA
6 EA
1 EA
1 EA
1 EA
2 EA
1 EA
1 EA
1 EA
13 EA
548 2400 434
548 2400 468
548 2400 539
548 2400 601
550 0934 000
560 0121 011
560 0121 018
578 0036 000
578 0037 000
610 1106 000
610 1107 000
610 1108 000
610 1145 000
610 1411 002
612 2139 002
646 2110 000
843 5572 211
843 5572 213
RES 22.1K OHM 1/2W 1%
RES 49.9K OHM 1/2W 1%
RES 249K OHM 1/2W 1%
RES 1MEG OHM 1/2W 1%
POT 500 OHM 1/2W 10%
POSISTOR 1.1 AMP 60VDC 13MM DISC
POSISTOR 2.5 AMP 60VDC 22MM DISC
RELAY, SPDT, 12V, 40A
RELAY, SPST, 350V 350 MA
HDR, 8C VERT 1ROW FRICTION
HDR, 12C VERT 1ROW FRICTION
HDR, 14C VERT 1ROW FRICTION
HDR, 6C VERT 1ROW FRICTION
PLUG, D STRT 15C PCB
RECP, D STRT 15C PCB
BARCODE, SN_ITEM_REV
SCH, PS CONTROLLER, 1-PH
PWB, PS CONTROLLER, 1-PH
1 EA
1 EA
1 EA
1 EA
1 EA
1 EA
1 EA
1 EA
1 EA
1 EA
1 EA
1 EA
1 EA
1 EA
1 EA
1 EA
0 DWG
1 EA
R75
R72 R79
R56
R78
R49
R32
R22 R27 R28 R29 R34 R81
R19 R42
R36 R54
R10 R20 R37 R51 R55 R58
R71
R35
R5 R7 R8 R11 R14 R38 R40 R41 R45
R30
R15 R16 R24 R26 R48 R82
R31
R6 R9 R12 R13 R43 R83
R60
R84
R65
R18 R76
R21
R33
R64
R2 R3 R4 R23 R39 R50 R53 R59 R61 R68 R69
R70 R77
R25
R66
R17
R63
R47
R1
R44
K1
U15
J1
J6
J5
J4
J3
J2
Table 7-10 KIT, 1KW, REDUND, PS, 50HZ - 200000000000001766 (E)
Harris PN
200000000000001021
200000000000001067
200000000000001069
358 3744 000
358 3837 000
472 1834 000
612 0233 000
843 5572 043
843 5572 053
917 2574 060
939 8234 059
943 5573 002
943 5573 006
943 5573 079
9929994009T
992 9994 066
Description
PWA, 1 KW MOTHERBOARD, DUAL PA
PWA, RELAY MODULE
BASE PLATE, RELAY MODULE
CARD GUIDE 8"LG,
CARD GUIDE, SNAP-IN
XFMR, 220V PRI, 2.2KW, 1-PHASE
JACK, N-TYPE STRAIGHT FLANGE
PWB, KEY CARD
PWB, SHORTING MODULE
COMBINER CABLE, DAX 1R
PLATE, RF OUT, 1KW
COVER, PA MODULE
BOTTOM PLATE
BASE PLATE, DUMMY PA
PWA, RF MODULE, TESTED
PS ASSY, 50HZ, DAX 1KW
Qty UM
1 EA
1 EA
1 EA
4 EA
6 EA
1 EA
1 EA
1 EA
1 EA
1 EA
1 EA
2 EA
1 EA
1 EA
2 EA
1 EA
Reference Designators
A3A2
#RELAY MODULE
#DUMMY MODULE
A11T1
#DUMMY MODULE
1#DUMMY MODULE,1#RELAY MODULE
#DUMMY MODULE
PA1 PA2
Table 7-11 PWA, 1 KW MOTHERBOARD, DUAL PA - 200000000000001021 (D)
Harris PN
302 0108 000
310 0012 000
310 0014 000
314 0005 000
5/2/13
Description
Qty UM
SCR, 6-32 X 1/2
4 EA
WASHER, FLAT #6 SST (ANSI NARROW)4 EA
WASHER, FLAT #10 SST (ANSI WIDE) 4 EA
LOCKWASHER, SPLIT #6 SST (ANSI)
4 EA
Reference Designators
2#T1 2#T2
2/T1 2/T2
1/E1 1/E2 1/E3 1/E4
2#T1 2#T2
888-2500-001
WARNING: Disconnect primary power prior to servicing.
7-7
Section 7 Parts List
314 0007 000
335 0059 000
335 0236 000
354 0819 000
354 0905 000
358 3861 001
522 0528 000
522 0567 000
524 0381 000
548 2400 201
560 0121 011
610 0900 000
610 0982 000
610 1043 000
610 1334 000
610 1411 002
612 1184 000
612 2128 000
612 2139 002
620 0700 000
843 5572 231
843 5572 233
922 1344 007
922 1344 039
LOCKWASHER, SPLIT #10 SST (ANSI)
WASHER FLAT NYLON #6 HOLE
WASHER SHOULDER 0.141 ID NYLON
LUG QC250 MALE PCB VERTICAL
TERMINAL, SCREW 10-32 30A
POST, SLIDE LOCK ASSY, 4-40
CAP 470UF 63V 20%
CAP 8200UF 16V 20% SNAP-MT
CAP 470UF 400V 20% SNAP-MT
RES 100 OHM 1/2W 1%
POSISTOR 1.1 AMP 60VDC 13MM DISC
HDR, 3C VERT 1ROW UNSHR
*HDR 26C 2ROW VERT TOP LATCH
*HDR 40C 2ROW VERT TOP LATCH
HDR, 3C VERT 1ROW 1-WALL
PLUG, D STRT 15C PCB
JUMPER SHUNT, 2C, 0.1'' PITCH
RECP, EDGECARD 36 POS
RECP, D STRT 15C PCB
JACK RECP, SMB PCB MT VERTICAL
SCH, 1KW MOTHERBOARD, DUAL PA
PWB, 1 KW MOTHERBOARD
TRANSFORMER
EXTENSION, SCREW TERMINAL
DAX-1/DAX-3
4 EA
4 EA
4 EA
1 EA
4 EA
2 EA
1 EA
1 EA
6 EA
5 EA
2 EA
4 EA
1 EA
1 EA
2 EA
1 EA
4 EA
5 EA
1 EA
2 EA
0 DWG
1 EA
2 EA
1 EA
1/E1 1/E2 1/E3 1/E4
2#T1 2#T2
2#T1 2#T2
J11
E1 E2 E3 E4
1/J3 1/J4
C12
C8
C9 C10 C11 C13 C14 C15
R6 R7 R8 R9 R10
R4 R11
JP1 JP2 JP3 JP4
J2
J1
J5 J6
J4
1/JP1 1/JP2 1/JP3 1/JP4
XA1J1 XA2J1 XA2J2 XA3J1 XA3J2
J3
J8 J9
T1 T2
Table 7-12 PWA, RELAY MODULE - 200000000000001067 (B)
Harris PN
200000000000001065
200000000000001066
380 0645 000
382 0184 000
382 0768 000
382 0774 000
382 1436 000
382 1704 000
384 0205 000
384 0610 000
384 0793 000
386 0394 000
516 0453 000
522 0591 000
548 2400 069
548 2400 201
548 2400 301
548 2400 401
578 0036 000
843 5572 241
843 5572 243
Description
IC, 74HC166
ESD
IC, 74AC125
ESD
XSTR, IRF530 ESD
*IC, LM340A/LM7805AC (TO-220)
IC, 74HC00 DIP-14
IC 74HC14 ESD
IC, 705 WATCHDOG ESD
IC, 74HC594
ESD
*DIODE, RECT 1N4148/914
LED, GRN T1-3/4 VERT
DIODE, TVS (UNIDIR), P6KE15A
*ZENER 1N5231B 5.1V 5% 0.5W
CAP 0.100UF 10% 100V X7R
CAP 47UF 25V 20%
RES 5.11 OHM 1/2W 1%
RES 100 OHM 1/2W 1%
RES 1K OHM 1/2W 1%
RES 10K OHM 1/2W 1%
RELAY, SPDT, 12V, 40A
SCH, RELAY MODULE
PWB, RELAY MODULE
Qty UM
1 EA
1 EA
1 EA
1 EA
1 EA
1 EA
1 EA
1 EA
2 EA
1 EA
2 EA
7 EA
8 EA
4 EA
2 EA
7 EA
2 EA
6 EA
1 EA
0 DWG
1 EA
Reference Designators
U7
U2
Q1
U5
U3
U1
U6
U4
CR8 CR11
DS1
CR9 CR10
CR1 CR2 CR3 CR4 CR5 CR6 CR7
C2 C3 C4 C5 C7 C10 C11 C12
C1 C6 C8 C9
R15 R16
R2 R4 R6 R8 R10 R12 R14
R7 R17
R1 R3 R5 R9 R11 R13
K1
Table 7-13 KIT, 3KW, PA, PS, 50HZ - 200000000000001767 (E)
Harris PN
358 3744 000
358 3837 000
472 1833 000
620 1906 000
843 5572 043
843 5572 053
917 2574 061
939 8234 060
943 5573 002
943 5573 006
943 5573 079
9929994009T
992 9994 067
992 9994 072
7-8
Description
CARD GUIDE 8"LG,
CARD GUIDE, SNAP-IN
XFMR, 220V PRI, 6.5KW, 1-PHASE
END TERM, 7/8 EIA FLANGE
PWB, KEY CARD
PWB, SHORTING MODULE
COMBINER CABLE, DAX 3K
PLATE, RF OUT, 3KW
COVER, PA MODULE
BOTTOM PLATE
BASE PLATE, DUMMY PA
PWA, RF MODULE, TESTED
PS ASSY, 50HZ, DAX 3KW
PWA, MOTHERBOARD, 3KW
Qty UM
4 EA
6 EA
1 EA
1 EA
1 EA
1 EA
1 EA
1 EA
1 EA
1 EA
1 EA
3 EA
1 EA
1 EA
Reference Designators
#DUMMY MODULE
A11T1
#DUMMY MODULE
#DUMMY MODULE
#DUMMY MODULE
PA1 PA2 PA3
A3A2
888-2500-001
WARNING: Disconnect primary power prior to servicing.
5/2/13
Section 7 Parts List
DAX-1/DAX-3
Table 7-14 PS ASSY, 50HZ, DAX 3KW - 992 9994 067 (U)
Harris PN
200000000000000956
200000000000000960
200000000000001521
200000000000001622
200000000000001752
358 0003 000
358 3614 000
358 3845 000
384 0705 000
384 1171 000
398 0557 000
476 0441 000
540 1600 201
542 1738 000
610 1253 000
612 1451 000
735 0041 001
736 0376 001
736 0377 001
917 2574 020
917 2574 021
917 2574 065
922 1344 024
922 1344 030
922 1344 031
922 1344 046
939 8234 039
939 8234 056
939 8234 063
943 5573 083
943 5573 084
943 5573 085
943 5573 125
943 5573 152
952 9234 008
992 8553 012
992 9994 013
992 9994 020
Description
STANDOFF
BRACKET, CAPACITOR
COVER, PS CONTROLLER
CAP, 2200UF, 450V 20%
CB, 3 POLE, 30 AMP 277/480VAC
BRACKET RESISTOR MTG
STANDOFF, 6-32 X 1-1/8
SPACER, .500" DIA X .375" LG
RECT, 85HF100 (DO203)
SCR, ST180S12P0V
FUSE, FAST 30 AMP 600V
IND, TOROIDAL, 20MH 45ADC
RES 100 OHM 3W 5%
RES, 100 OHM 100W 10%
PLUG, MALE 4C 1ROW STRAIGHT
PLUG, FEMALE 4C 1ROW STRAIGHT
FIRING BD, 1-PH RECT, 50HZ
PSU, SW, 240W +12VDC
PSU, SW, 240W +48VDC
PWR SUPPLY AC CABLE
CABLE, PWR SUPPLY CONTROL
CABLE, B+ BYPASS CAPS
RUBBER PAD
BLOCK, TERMINAL
STUD
SPACER
MOUNTING BRACKET
BRACKET, CIRCUIT BREAKER
BRACKET, CROWBAR
BRACKET, LVPS
PS MOUNTING BRACKET
COVER, CIRCUIT BREAKER
ADAPTER STANDOFF 1/4-20 TO 1/4-28
SHOULDER WASHER
CHASSIS, POWER SUPPLY
PWA, MOV-AC 391-430 VAC
PWA, 1-PHASE SCR RECTIFIER
*PWA, PS CONTROLLER, 1-PH
Qty UM
1 EA
1 EA
1 EA
2 EA
1 EA
2 EA
2 EA
2 EA
1 EA
1 EA
1 EA
1 EA
1 EA
1 EA
1 EA
1 EA
1 EA
1 EA
1 EA
1 EA
1 EA
1 EA
1 EA
1 EA
2 EA
2 EA
1 EA
1 EA
1 EA
1 EA
1 EA
1 EA
1 EA
2 EA
1 EA
1 EA
1 EA
1 EA
Reference Designators
#L1
C1 C2
CB1
#PS CONT COVER
CR39
F5
L1
R2
R1
J2P2
J2P2
A14
LVPS2
LVPS1
#CR39
A13
A16
A17
Table 7-15 PWA, MOTHERBOARD, 3KW - 992 9994 072 (D)
Harris PN
302 0108 000
310 0012 000
314 0005 000
335 0059 000
335 0236 000
354 0819 000
354 0905 000
358 3861 001
522 0528 000
522 0567 000
524 0381 000
548 2400 201
560 0121 011
610 0900 000
610 0982 000
610 1043 000
610 1334 000
610 1411 002
612 1184 000
612 2128 000
612 2139 002
620 0700 000
646 2110 000
843 5572 121
843 5572 123
922 1344 007
922 1344 039
5/2/13
Description
Qty UM
SCR, 6-32 X 1/2
6 EA
WASHER, FLAT #6 SST (ANSI NARROW)6 EA
LOCKWASHER, SPLIT #6 SST (ANSI)
6 EA
WASHER FLAT NYLON #6 HOLE
6 EA
WASHER SHOULDER 0.141 ID NYLON 6 EA
LUG QC250 MALE PCB VERTICAL
1 EA
TERMINAL, SCREW 10-32 30A
2 EA
POST, SLIDE LOCK ASSY, 4-40
2 EA
CAP 470UF 63V 20%
1 EA
CAP 8200UF 16V 20% SNAP-MT
1 EA
CAP 470UF 400V 20% SNAP-MT
7 EA
RES 100 OHM 1/2W 1%
5 EA
POSISTOR 1.1 AMP 60VDC 13MM DISC 2 EA
HDR, 3C VERT 1ROW UNSHR
4 EA
*HDR 26C 2ROW VERT TOP LATCH
1 EA
*HDR 40C 2ROW VERT TOP LATCH
1 EA
HDR, 3C VERT 1ROW 1-WALL
2 EA
PLUG, D STRT 15C PCB
1 EA
JUMPER SHUNT, 2C, 0.1'' PITCH
4 EA
RECP, EDGECARD 36 POS
6 EA
RECP, D STRT 15C PCB
1 EA
JACK RECP, SMB PCB MT VERTICAL 2 EA
BARCODE, SN_ITEM_REV
1 EA
SCH, MOTHERBOARD
0 DWG
PWB, MOTHERBOARD
1 EA
TRANSFORMER
3 EA
EXTENSION, SCREW TERMINAL
1 EA
Reference Designators
2/T1 2/T2 2/T3
2/T1 2/T2 2/T3
2/T1 2/T2 2/T3
2/T1 2/T2 2/T3
2/T1 2/T2 2/T3
J11
E3 E4
#J3 #J4
C12
C8
C7 C9 C10 C11 C13 C14 C15
R6 R7 R8 R9 R10
R4 R11
JP1 JP2 JP3 JP4
J2
J1
J5 J6
J4
1/JP1 1/JP2 1/JP3 1/JP4
XA1J1 XA1J2 XA2J1 XA2J2 XA3J1 XA3J2
J3
J8 J9
T1 T2 T3
#E3
888-2500-001
WARNING: Disconnect primary power prior to servicing.
7-9
Section 7 Parts List
DAX-1/DAX-3
Table 7-16 BASIC, DAX-1/1R/3 AM XMTR - 992 9994 065 (AG)
Harris PN
200000000000000255
200000000000000317
200000000000000958
200000000000001190
200000000000002042
200000000000002230
296 0258 000
335 0294 000
350 0063 000
354 0003 000
354 0324 000
358 1974 000
358 2589 000
358 2628 000
358 3248 000
358 3744 000
358 3837 000
396 0261 000
410 0019 000
414 0302 000
424 0016 000
424 0025 000
424 0360 000
424 0410 000
430 0291 000
448 1231 000
464 0349 000
494 0516 000
516 0204 000
516 0413 000
646 1353 000
646 1714 000
813 4999 027
817 2150 037
901 0122 049
917 2517 310
917 2574 006
917 2574 040
922 1344 016
922 1344 026
922 1344 027
922 1344 040
922 1344 045
922 1344 057
922 1344 058
939 8234 004
939 8234 031
939 8234 032
939 8234 035
939 8234 036
939 8234 046
939 8234 057
939 8234 058
939 8234 062
943 4237 001
943 5573 059
943 5573 060
943 5573 061
943 5573 062
943 5573 064
943 5573 065
943 5573 066
943 5573 067
943 5573 068
943 5573 069
943 5573 086
943 5573 087
943 5573 088
7-10
Description
SUPPORT, CONTROL PANEL
INSTALLATION ACCESSORIES
FAN PANEL
FILTER BOX
FINGER GUARD
RAIL, SUPPORT
TUBING, TEFLON 19AWG STD WALL
WASHER, FLAT, NEOPRENE
RIVET PULL THRU .093
LUG RING #10 22-18AWG RED
LUG RING #10 12-10AWG YEL
NUT, CAGE 10-32
MOUNT, RIBBON CABLE, 2''
CABLE PUSH MOUNT
CLIP, SPRING 0.24" COMP DIA
CARD GUIDE 8"LG,
CARD GUIDE, SNAP-IN
DISPLAY, LCD BLUE
INSULATOR ROUND NS5W 0316
CORE, FERRITE
GROMMET 1.125 GROOVE DIA
GROMMET 0.563 GROOVE DIA
GROMMET 1-3/4 MTG DIA
GROMMET 1.375 GROOVE DIA
FAN, 48VDC 280CFM, 6" DIA
FAN FILTER ASSEMBLY, 162MM DIA
TOOL, ADJUSTMENT
CHOKE, 25 000 UH 65MA
CAP, RF, 100PF 5KV 10% N750
CAP, RF, 10PF 7.5KV 10% NPO
NAMEPLATE, XMTR EQUIPMENT
OVERLAY, DAX
STDOFF 6-32X5/8 1/4 HEX
GROUNDING PLATE
ASSY, AM RF SAMPLE 1/3KW
SPACER, .5 X DIA .715 LG
SPACER, PWB / XFMR
CABLE DAX 3KW INTERCONNECT
PANEL, PWB MTG
SHIM
SPACER, DISPLAY
BRACKET
BUSBAR
TEMPLATE, CAP
PLATE, AIR BLOCK
HOUSING, PWB
RAIL, CONTROL, LEFT
RAIL, CONTROL, RIGHT
COVER, TRAY
BUSBAR
BUSBAR
SPEC, GUIDE, MODIFIED, 19" LG
TRAY, CAPACITOR
WALL, CABLE TRAY
COIL, VAR 17VC 1644
PANEL, CARD GUIDE, LEFT
PANEL, CARD GUIDE, RIGHT
DIVIDER WALL
SHELF, PA
DIVIDER WALL, OUTPUT
PANEL, CONTROL
SHELF, OUTPUT
TRAY, CABLE
ACCESS PANEL, CONTROL
REAR PANEL
TRAY, CABLE
DIVIDE WALL, OUTPUT
CHANNEL, AC
Qty UM
1 EA
1 EA
1 EA
1 EA
1 EA
2 EA
.5 FT
16 EA
6 EA
2 EA
4 EA
21 EA
1 EA
2 EA
1 EA
2 EA
6 EA
1 EA
8 EA
1 EA
1 EA
1 EA
1 EA
2 EA
2 EA
2 EA
1 EA
1 EA
1 EA
1 EA
1 EA
1 EA
1 EA
1 EA
1 EA
8 EA
1 EA
1 EA
1 EA
1 EA
4 EA
1 EA
1 EA
1 EA
1 EA
1 EA
1 EA
1 EA
1 EA
1 EA
1 EA
2 EA
1 EA
1 EA
2 EA
1 EA
1 EA
1 EA
1 EA
1 EA
1 EA
1 EA
1 EA
1 EA
1 EA
1 EA
1 EA
1 EA
Reference Designators
B1 B2
#B1 B2
#A5A1
#A2
#DISPLAY
L1 L2
888-2500-001
WARNING: Disconnect primary power prior to servicing.
5/2/13
Section 7 Parts List
DAX-1/DAX-3
943 5573 090
952 9234 006
952 9234 007
971 0025 002
992 9994 005
992 9994 016
992 9994 030
992 9994 055
992 9994 106
GROUND STRAP
WALL, RIGHT
WALL, LEFT
B+ SAMPLE TERM BD MTG,
PWA, EXCITER/CONTROLLER
*PWA, EXTERNAL I/O
PWA, OUTPUT MONITOR
PWA, SECURITY KEY
PWA, RF SAMPLE DIVIDER
1 EA
1 EA
1 EA
1 EA
1 EA
1 EA
1 EA
1 EA
1 EA
A4
A5A1
A8A10
Table 7-17 PWA, EXCITER/CONTROLLER - 992 9994 005 (K)
Harris PN
000 0000 010
444 3032 000
522 0588 000
610 0900 000
610 1069 000
610 1295 000
610 1401 024
610 1420 000
610 1585 014
610 1585 040
612 1184 000
612 2213 000
620 0700 000
646 2110 000
817 2574 044
843 5572 100
843 5572 101
992 9994 004
Description
B/M NOTE:
TCXO, 10 MHZ, +5VDC ESD
CAP 100UF 25V 20% 8MM NON-POLAR
HDR, 3C VERT 1ROW UNSHR
HDR, 9C 1ROW VERTICAL UNSHR
HDR, 2C VERT 1ROW FRICTION
HDR, 24C 2ROW VERTICAL (SYS 50)
PLUG, 68C RT ANGLE
HDR, 14C 2ROW VERTICAL
HDR, 40C 2ROW VERTICAL
JUMPER SHUNT, 2C, 0.1'' PITCH
RECP, 24C 2ROW, RT ANG, EDGE
JACK RECP, SMB PCB MT VERTICAL
BARCODE, SN_ITEM_REV
SW/FW DAX
SPEC, EXCITER/CONTROLLER
SCH, EXCITER/CONTROLLER
PWA, EXCITER/CONTROLLER, SMT
Qty UM
1 DWG
1 EA
1 EA
2 EA
1 EA
1 EA
1 EA
1 EA
1 EA
2 EA
2 EA
1 EA
4 EA
1 EA
0 DWG
0 DWG
0 DWG
1 EA
Harris PN
300 1484 000
304 0087 000
312 0045 000
358 3383 000
358 3861 001
382 1705 000
382 1722 000
384 0935 000
404 0908 000
560 0121 004
566 0037 000
578 0026 000
610 0877 000
610 0900 000
610 1424 003
610 1424 012
610 1434 002
610 1453 000
612 1184 000
612 1499 001
612 2139 001
612 2153 000
612 2156 003
612 2156 012
612 2175 002
620 0700 000
620 1677 000
646 2110 000
843 5572 110
843 5572 111
992 9994 017
Description
Qty UM
SCREW, PHMS 4-40 X 1/4 BRASS
1 EA
NUT, HEX 4-40
1 EA
LOCKWASHER, SPLIT #4 PH-BRZ (ANSI)1 EA
JUMPER, 0.1" LG, 0.125" H
1 EA
POST, SLIDE LOCK ASSY, 4-40
3 EA
IC, TPS75733
ESD
1 EA
IC, OP-AMP, BUF634T,
ESD
1 EA
*SCR, S6055R ESD
1 EA
*HEATSINK, VERTICAL, TO-220
1 EA
POSISTOR 0.25 AMP 60VDC 8MM DISC 1 EA
CONVERTER, DC/DC 5V .75W ESD
1 EA
RELAY 2PDT 12VDC 2A NON-LATCH 3 EA
HDR, 2C VERT 1ROW UNSHR
5 EA
HDR, 3C VERT 1ROW UNSHR
1 EA
HDR, 3C 1ROW RT ANGLE
2 EA
HDR, 12C 1ROW RT ANGLE
4 EA
*PLUG D RT ANG 15C MET SHELL
1 EA
HDR, 20C RTANG 1ROW UNSHR
1 EA
JUMPER SHUNT, 2C, 0.1'' PITCH
6 EA
RECP, D, 9C RT ANG METAL
1 EA
RECP, D STRT 9C PCB
1 EA
RECP, 68C RT ANGLE
1 EA
PLUG, 3C 1ROW VERTICAL
2 EA
PLUG, 12C 1ROW VERTICAL
4 EA
*RECP D RT ANG 15C MET SHELL
2 EA
JACK RECP, SMB PCB MT VERTICAL 1 EA
JACK, BNC STRAIGHT PCB
5 EA
BARCODE, SN_ITEM_REV
1 EA
SPEC, EXTERNAL I/O
0 DWG
SCH, EXTERNAL I/O
0 DWG
*PWA, EXTERNAL I/O, SMT
1 EA
Reference Designators
U11
U4
C170
JP1 JP2
J5
J1
J10
J4
J13
J14 J16
1/JP1 1/JP2
J3
J6 J7 J8 J11
Table 7-18 *PWA, EXTERNAL I/O - 992 9994 016 (K-)
5/2/13
Reference Designators
1/XU51
1/XU51
1/XU51
JP7
1/J2 1/J18 1/J19
U49
U51
Q14
XU51
R18
U16
K1 K2 K3
JP2 JP3 JP4 JP5 JP6
JP1
J13 J15
J5 J7 J9 J12
J18
J3
1/JP1 1/JP2 1/JP3 1/JP4 1/JP5 1/JP6
J16
J17
J6
P/J13 P/J15
P/J5 P/J7 P/J9 P/J12
J2 J19
J1
J4 J8 J10 J11 J14
888-2500-001
WARNING: Disconnect primary power prior to servicing.
7-11
Section 7 Parts List
DAX-1/DAX-3
Table 7-19 PWA, OUTPUT MONITOR - 992 9994 030 (K-)
Harris PN
354 0881 000
358 2635 000
358 3861 001
382 0593 000
382 0707 000
382 1679 000
384 0205 000
384 0321 000
384 0882 000
386 0053 000
386 0082 000
386 0406 000
386 0472 000
494 0239 000
494 0333 000
494 0414 000
500 0883 000
500 0902 000
516 0453 000
516 0484 000
516 0533 000
516 0970 000
522 0550 000
522 0573 000
540 1600 210
540 1600 213
540 1600 215
548 2400 117
548 2400 134
548 2400 230
548 2400 293
548 2400 301
548 2400 312
548 2400 330
548 2400 343
548 2400 356
548 2400 366
548 2400 401
548 2400 466
548 2400 489
550 0951 000
578 0026 000
604 1244 000
610 0877 000
610 0933 000
612 1184 000
612 2175 002
620 3200 000
646 2110 000
843 5572 031
843 5572 033
922 1344 020
Description
LUG QC250 MALE PCB RTANG
CABLE TIE, PUSH MOUNT SNAP IN
POST, SLIDE LOCK ASSY, 4-40
IC TL072ACP ESD
IC, LM335AZ ESD
IC, LM317HV (TO-220)
*DIODE, RECT 1N4148/914
*DIODE, SCHOTTKY, 5082-2800
LED, RED T1 RTANG
*ZENER 1N4746A 18V 5% 1W
*ZENER 1N4744A 15V 5% 1W
*ZENER 1N4757A 51V 5% 1W
DIODE, TVS (BIDIR), P6KE39CA
CHOKE, WIDE BAND 2.5 TURN
IND, 220UH 10% 52MA
INDUCTOR, 390UH 10% (9250)
CAP, MICA, 4700PF 500V 5%
CAP, MICA, 3300PF 500V 5%
CAP 0.100UF 10% 100V X7R
CAP 0.100UF 10% 100V X7R CK06
*CAP 0.010UF 10% 50V X7R
CAP 390PF 5% 100V C0G
*CAP 100UF 35V 20% (6.3X11)
CAP 47UF 63V 20%
RES 240 OHM 3W 5%
RES 330 OHM 3W 5%
RES 390 OHM 3W 5%
RES 14.7 OHM 1/2W 1%
RES 22.1 OHM 1/2W 1%
RES 200 OHM 1/2W 1%
RES 909 OHM 1/2W 1%
RES 1K OHM 1/2W 1%
RES 1.3K OHM 1/2W 1%
RES 2K OHM 1/2W 1%
RES 2.74K OHM 1/2W 1%
RES 3.74K OHM 1/2W 1%
RES 4.75K OHM 1/2W 1%
RES 10K OHM 1/2W 1%
RES 47.5K OHM 1/2W 1%
RES 82.5K OHM 1/2W 1%
TRIMPOT 200 OHM 1/2W 10%
RELAY 2PDT 12VDC 2A NON-LATCH
SW, DIP, 4 SPST, SIDE ACTUATED
HDR, 2C VERT 1ROW UNSHR
TEST POINT, OVAL-LOOP THRU
JUMPER SHUNT, 2C, 0.1'' PITCH
*RECP D RT ANG 15C MET SHELL
RECP, RT ANGLE, MCX
BARCODE, SN_ITEM_REV
SCH, OUTPUT MONITOR
PWB, OUTPUT MONITOR
TRANSFORMER
Qty UM
1 EA
3 EA
1 EA
2 EA
1 EA
1 EA
6 EA
2 EA
1 EA
3 EA
2 EA
2 EA
1 EA
1 EA
1 EA
1 EA
1 EA
1 EA
7 EA
1 EA
1 EA
2 EA
2 EA
1 EA
1 EA
2 EA
2 EA
1 EA
3 EA
1 EA
1 EA
5 EA
1 EA
1 EA
1 EA
1 EA
2 EA
3 EA
2 EA
2 EA
1 EA
1 EA
1 EA
2 EA
1 EA
2 EA
1 EA
1 EA
1 EA
0 DWG
1 EA
1 EA
Reference Designators
J5
3/T1
1/J1
U1 U2
Q1
U3
CR2 CR8 CR10 CR11 CR12 CR14
CR7 CR9
DS1
CR1 CR4 CR5
CR3 CR6
CR15 CR16
CR13
RFC1
L1
L2
C13
C15
C2 C3 C5 C6 C8 C11 C17
C14
C10
C4 C7
C1 C12
C9
R20
R8 R24
R1 R14
R25
R2 R3 R22
R27
R5
R11 R15 R18 R28 R31
R4
R29
R26
R21
R13 R16
R6 R9 R12
R10 R17
R7 R19
R23
K1
S1
JP1 JP2
TP1
#JP1 #JP2
J1
J2
T1
Table 7-20 PWA, RF SAMPLE DIVIDER - 992 9994 106 (B-)
Harris PN
516 0894 000
610 1413 000
612 1507 000
646 2110 000
843 5572 181
843 5572 183
7-12
Description
CAP 1500PF 5% 100V C0G
HDR, 2C RTANG 1ROW FRICTION
JACK, SMA VERTICAL PCB (TALL)
BARCODE, SN_ITEM_REV
SCH, RF SAMPLE DIVIDER
PWB, RF SAMPLE DIVIDER
Qty UM
1 EA
1 EA
1 EA
1 EA
0 DWG
1 EA
Reference Designators
C1
J2
J1
888-2500-001
WARNING: Disconnect primary power prior to servicing.
5/2/13
Section 7 Parts List
DAX-1/DAX-3
Table 7-21 KIT, 1KW, SINGLE PA,PS, 60HZ - 992 9994 113 (H)
Harris PN
200000000000001768
472 1834 000
612 0233 000
917 2574 059
939 8234 041
939 8234 059
943 5573 047
943 5573 089
9929994009T
992 9994 060
Description
PS ASSY, 60HZ, DAX 1KW
XFMR, 220V PRI, 2.2KW, 1-PHASE
JACK, N-TYPE STRAIGHT FLANGE
COMBINER CABLE, DAX 1K
PLATE, AIR BLOCK
PLATE, RF OUT, 1KW
BLANK PANEL, PA
BOTTOM PLATE, 1KW
PWA, RF MODULE, TESTED
PWA, MOTHERBOARD, 1KW
Qty UM
1 EA
1 EA
1 EA
1 EA
2 EA
1 EA
2 EA
1 EA
1 EA
1 EA
Reference Designators
A11T1
PA1
A3A2
Table 7-22 PS ASSY, 60HZ, DAX 1KW - 200000000000001768 (J)
Harris PN
200000000000000023
200000000000000956
200000000000001521
358 0003 000
358 3614 000
358 3845 000
384 0705 000
384 1171 000
398 0625 000
476 0442 000
540 1600 201
542 1738 000
610 1253 000
735 0041 000
736 0376 001
736 0377 001
917 2574 020
917 2574 021
922 1344 030
922 1344 031
922 1344 046
939 8234 039
939 8234 056
939 8234 063
943 5573 083
943 5573 084
943 5573 085
943 5573 125
943 5573 152
952 9234 008
992 8553 012
992 9994 013
992 9994 020
Description
CB, 3 POLE, 15 AMP 277/480VAC
STANDOFF
COVER, PS CONTROLLER
BRACKET RESISTOR MTG
STANDOFF, 6-32 X 1-1/8
SPACER, .500" DIA X .375" LG
RECT, 85HF100 (DO203)
SCR, ST180S12P0V
FUSE, FAST 10A 600V
*IND, TOROIDAL, 62MH 14.5ADC
RES 100 OHM 3W 5%
RES, 100 OHM 100W 10%
PLUG, MALE 4C 1ROW STRAIGHT
*FIRING BD, 1-PH RECT, 60HZ
PSU, SW, 240W +12VDC
PSU, SW, 240W +48VDC
PWR SUPPLY AC CABLE
CABLE, PWR SUPPLY CONTROL
BLOCK, TERMINAL
STUD
SPACER
MOUNTING BRACKET
BRACKET, CIRCUIT BREAKER
BRACKET, CROWBAR
BRACKET, LVPS
PS MOUNTING BRACKET
COVER, CIRCUIT BREAKER
ADAPTER STANDOFF 1/4-20 TO 1/4-28
SHOULDER WASHER
CHASSIS, POWER SUPPLY
PWA, MOV-AC 391-430 VAC
PWA, 1-PHASE SCR RECTIFIER
*PWA, PS CONTROLLER, 1-PH
Qty UM
1 EA
1 EA
1 EA
2 EA
2 EA
2 EA
1 EA
1 EA
1 EA
1 EA
1 EA
1 EA
1 EA
1 EA
1 EA
1 EA
1 EA
1 EA
1 EA
2 EA
2 EA
1 EA
1 EA
1 EA
1 EA
1 EA
1 EA
1 EA
2 EA
1 EA
1 EA
1 EA
1 EA
Reference Designators
CB1
#L1
#PS CONT COVER
CR39
F5
L1
R2
R1
J2P2
A14
LVPS2
LVPS1
A13
A16
A17
Table 7-23 KIT, 1KW, REDUND, PS, 60HZ - 992 9994 114 (L)
Harris PN
200000000000001021
200000000000001067
200000000000001069
200000000000001768
358 3744 000
358 3837 000
472 1834 000
612 0233 000
843 5572 043
843 5572 053
917 2574 060
939 8234 059
943 5573 002
943 5573 006
943 5573 079
9929994009T
5/2/13
Description
PWA, 1 KW MOTHERBOARD, DUAL PA
PWA, RELAY MODULE
BASE PLATE, RELAY MODULE
PS ASSY, 60HZ, DAX 1KW
CARD GUIDE 8"LG,
CARD GUIDE, SNAP-IN
XFMR, 220V PRI, 2.2KW, 1-PHASE
JACK, N-TYPE STRAIGHT FLANGE
PWB, KEY CARD
PWB, SHORTING MODULE
COMBINER CABLE, DAX 1R
PLATE, RF OUT, 1KW
COVER, PA MODULE
BOTTOM PLATE
BASE PLATE, DUMMY PA
PWA, RF MODULE, TESTED
Qty UM
1 EA
1 EA
1 EA
1 EA
4 EA
6 EA
1 EA
1 EA
1 EA
1 EA
1 EA
1 EA
2 EA
1 EA
1 EA
2 EA
Reference Designators
A3A2
#RELAY MODULE
#DUMMY MODULE
A11T1
#DUMMY MODULE
1#DUMMY MODULE,1#RELAY MODULE
#DUMMY MODULE
PA1 PA2
888-2500-001
WARNING: Disconnect primary power prior to servicing.
7-13
Section 7 Parts List
DAX-1/DAX-3
Table 7-24 KIT, 3KW, PA, PS, 60HZ - 992 9994 115 (G)
Harris PN
200000000000001769
358 3744 000
358 3837 000
472 1833 000
620 1906 000
843 5572 043
843 5572 053
917 2574 061
939 8234 060
943 5573 002
943 5573 006
943 5573 079
9929994009T
992 9994 072
Description
PS ASSY, 60HZ, DAX 3KW
CARD GUIDE 8"LG,
CARD GUIDE, SNAP-IN
XFMR, 220V PRI, 6.5KW, 1-PHASE
END TERM, 7/8 EIA FLANGE
PWB, KEY CARD
PWB, SHORTING MODULE
COMBINER CABLE, DAX 3K
PLATE, RF OUT, 3KW
COVER, PA MODULE
BOTTOM PLATE
BASE PLATE, DUMMY PA
PWA, RF MODULE, TESTED
PWA, MOTHERBOARD, 3KW
Qty UM
1 EA
4 EA
6 EA
1 EA
1 EA
1 EA
1 EA
1 EA
1 EA
1 EA
1 EA
1 EA
3 EA
1 EA
Reference Designators
#DUMMY MODULE
A11T1
#DUMMY MODULE
#DUMMY MODULE
#DUMMY MODULE
PA1 PA2 PA3
A3A2
Table 7-25 PS ASSY, 60HZ, DAX 3KW - 200000000000001769 (L)
Harris PN
200000000000000956
200000000000000960
200000000000001521
200000000000001622
200000000000001752
358 0003 000
358 3614 000
358 3845 000
384 0705 000
384 1171 000
398 0557 000
476 0441 000
540 1600 201
542 1738 000
610 1253 000
735 0041 000
736 0376 001
736 0377 001
917 2574 020
917 2574 021
917 2574 065
922 1344 024
922 1344 030
922 1344 031
922 1344 046
939 8234 039
939 8234 056
939 8234 063
943 5573 083
943 5573 084
943 5573 085
943 5573 125
943 5573 152
952 9234 008
992 8553 012
992 9994 013
992 9994 020
7-14
Description
STANDOFF
BRACKET, CAPACITOR
COVER, PS CONTROLLER
CAP, 2200UF, 450V 20%
CB, 3 POLE, 30 AMP 277/480VAC
BRACKET RESISTOR MTG
STANDOFF, 6-32 X 1-1/8
SPACER, .500" DIA X .375" LG
RECT, 85HF100 (DO203)
SCR, ST180S12P0V
FUSE, FAST 30 AMP 600V
IND, TOROIDAL, 20MH 45ADC
RES 100 OHM 3W 5%
RES, 100 OHM 100W 10%
PLUG, MALE 4C 1ROW STRAIGHT
*FIRING BD, 1-PH RECT, 60HZ
PSU, SW, 240W +12VDC
PSU, SW, 240W +48VDC
PWR SUPPLY AC CABLE
CABLE, PWR SUPPLY CONTROL
CABLE, B+ BYPASS CAPS
RUBBER PAD
BLOCK, TERMINAL
STUD
SPACER
MOUNTING BRACKET
BRACKET, CIRCUIT BREAKER
BRACKET, CROWBAR
BRACKET, LVPS
PS MOUNTING BRACKET
COVER, CIRCUIT BREAKER
ADAPTER STANDOFF 1/4-20 TO 1/4-28
SHOULDER WASHER
CHASSIS, POWER SUPPLY
PWA, MOV-AC 391-430 VAC
PWA, 1-PHASE SCR RECTIFIER
*PWA, PS CONTROLLER, 1-PH
Qty UM
1 EA
1 EA
1 EA
2 EA
1 EA
2 EA
2 EA
2 EA
1 EA
1 EA
1 EA
1 EA
1 EA
1 EA
1 EA
1 EA
1 EA
1 EA
1 EA
1 EA
1 EA
1 EA
1 EA
2 EA
2 EA
1 EA
1 EA
1 EA
1 EA
1 EA
1 EA
1 EA
2 EA
1 EA
1 EA
1 EA
1 EA
Reference Designators
#L1
C1 C2
CB1
#PS CONT COVER
CR39
F5
L1
R2
R1
J2P2
A14
LVPS2
LVPS1
#CR39
A13
A16
A17
888-2500-001
WARNING: Disconnect primary power prior to servicing.
5/2/13